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This section provides an overview for limit switches as well as their applications and principles. Also, please take a look at the list of 45 limit switch manufacturers and their company rankings. Here are the top-ranked limit switch companies as of December, 2024: 1.K. A. Schmersal GmbH & Co. KG, 2.Burger & Brown Engineering, Inc., 3.Tapeswitch Corp..
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1985-2014: Worked for Alstom Corporation, ABB Corporation, and Gadelius Corporation, designing Jungstrom air preheaters and mechanical design of diamond soot blowers. (ABB Corporation: https://new.abb.com/jp)
2014-2021: Worked as an engineering and project manager at Alvos Inc.
https://www.linkedin.com/in/yoichi-hiroki-92192394/
Limit Switches are switches that are activated by the movement of machine parts or the presence of objects. As part of a control system, they are used to detect safety interlocks or objects passing through a specific position to automatically start or stop a machine, limit the range of motion of a machine, or detect its position.
Limit Switches are microswitches built into a metal or plastic case with an enclosed case to protect them from external forces, water, oil, gases, and dust in the operating environment. The contact is turned on and off by the movement of an actuator (mechanical sensing part).
Actuators include plunger type (direct-acting type), rotary lever, fork-lock lever, flexible rod, etc., and are available in a variety of shapes according to the application and operating environment.
Limit Switches are used to turn on or off an electric circuit based on the result of detecting the position of an object.
In automation systems for automatic control of factory production lines and the like, Limit Switches are used to detect the movement and position of machines. For example, Limit Switches are installed in the detection position and turn on at the abnormal operation position to alarm and stop the machine operation.
Another familiar example is an elevator cage (a conveyor that carries people and luggage up and down). When the cage reaches a certain position on the floor where it stops, the limit switch activates to stop the motor and the cage comes to a stop.
Limit switches are thus used in a variety of applications in automatic control systems.
A basic Limit Switch consists of a body, head, microswitch, plunger, rotating shaft (rotating lever and fork lock bar only), and actuator.
The principle of Limit Switch is explained below for a rotary lever-type actuator.
1) The object to be detected moves, and toward the detection position.
2) The actuator is pushed by the object to be detected and rotates.
3) The rotary shaft fixed to the actuator rotates.
4) The cam on the rotary shaft pushes the plunger.
5) The movable contact attached to the end of the plunger moves.
6) The movable contact touches the stationary contact, and the electrical circuit is turned on.
There are many types and specifications of Limit Switches, and the following is a basic guide to selecting the right one:
1) Selection by operating environment
2) Selection by actuator type
Select an actuator type that is suitable for the intended use. The following are typical examples, though several other types of actuators are available.
3) Selection by characteristics
For rotary levers and fork lock levers, the mounting position of the Limit Switch and the angle of the actuator must be set so that the angle at which the detected object rotates the actuator is greater than the movement (angle) to the operation.
In the case of plunger type and flexible rod type, the limit switch mounting position and actuator position must be set so that the distance that the detected object pushes the actuator is greater than the movement (distance) to the operation.
Note that the movement of the detected object must be kept within the actuator's motion limit position (TTP).
Limit Switch failures may be caused by age-related deterioration due to mechanical life or wear, but the majority of failures are said to be caused by the way the switch is used. These include poor positioning of the dog or actuator and poor sealing.
Poor installation of Limit Switches is another cause of failure. If a switch installed to limit the range of motion of a machine is actuated multiple times, the position of the switch will gradually shift, and the switch may stop operating due to insufficient push-in. As a countermeasure, some switches come with a setting position indicator attached to the switch itself. If the switch is programmed to be pushed in to a preset position in advance, it will operate normally even if the switch is slightly out of position.
Care must also be taken in the design of the detectable object used to actuate the Limit Switch. The cut angle of the object to be detected should be 45 degrees or less; if it exceeds 45 degrees, the force applied to the lever shaft will be excessive depending on the moving speed of the object to be detected, which may cause a malfunction. If the moving speed is high, it is also effective to make the lever parallel to the cut surface of the object to be detected.
Also, if there is a steep step in the dog, a strong shock may be applied when the switch returns to the reference position. The ON/OFF switching of the switch should be designed to be as smooth as possible.
There are two types of plunger type switches: one seals the plunger part with an O-ring or rubber diaphragm and the other covers it with a rubber cap.
In the former type, the sealing rubber is not exposed to the outside, so it is resistant to hot foreign materials such as machine tool chips. However, it has a weak point that fine particles such as sand, chips, and dust can get caught in the sliding plunger surface.
The latter type has superior sealing performance because sand, chips, and other particles and dust do not become entrapped. However, hot foreign objects such as machine tool chips may melt or tear the rubber cap, making it necessary to select the right type depending on cost, application, and location.
When Limit Switches are operated, air is compressed and sucked by the piston motion of the plunger. Therefore, if the plunger is kept pushed in for a long time, the internal pressure in the Limit Switch becomes the same as atmospheric pressure, and the plunger may return slowly due to resistance from the atmospheric pressure when the plunger returns.
In addition, the accumulation of oil or dust on the plunger or on the sealing portion of the rotary shaft can also impede the operation of the Limit Switch, resulting in poor operation of the Limit Switch.
*Including some distributors, etc.
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Honeywell International Inc. was founded in 1885 and headquartered in Charlotte, North Carolina. Honeywell is a diversified technology and manufacturing company to global customers in many industries such as aerospace, building technologies, performance materials, manufacturing, and safety. Honeywell produces hardware and software solutions for each industry it serves. In building technologies, Honeywell designs access controls, electrical and wiring, fire life safety, and employee training services. In aerospace, Honeywell designs cockpit systems and displays, engines, cabin management and cleaning, and health and usage monitoring.
Tapeswitch Corporation, located in Farmingdale, New York, has been a manufacturer since 1957 specializing in sensing, switching, control, and safety solutions. Its product range includes sensing industrial switching mats, cushioned sensing edges and bumpers, press-at-any-point ribbon switches, interface controllers, and photo-electric safety devices. These are geared towards enhancing safety, control, and automation in industrial and commercial settings, providing solutions to detect, control, and respond to various conditions and events. The company is ISO 9001:2015 registered, and its products are compliant with UL, cUL, CE, and TUV standards.
Banner Engineering Corporation, established in 1966 and headquartered in Minneapolis, Minnesota, is a manufacturer and supplier of industrial automation products. They offer an extensive range of sensors, including proximity sensors, photoelectric sensors, and limit switches, for detecting object presence, position, and speed. Additionally, Banner provides a different types of switches, such as pushbuttons, toggle switches, and rotary switches, to control electricity flow and offer system feedback. Their wide array of controls includes PLCs, HMIs, and motion controllers, enabling automation of industrial processes.
Burger & Brown Engineering, Inc., founded in 1978 and based in Grandview, Missouri, is a manufacturer offering a range of engineering services. The company is internationally known for its SMARTFLOW proprietary products for the molding industry. Smartflow products comprise a line of multi-port manifolds for water and non-aggressive liquid applications, flowmeters for monitoring flow, temperature, and pressure, and limit switches for ejector plate, slide retention, and core pull applications. Other services provided by the company include special machines for industrial automation, precision contract machining, custom injection molding, plastic part design, and consulting.
Assured Automation was founded in 1983 and is headquartered in Roselle, New Jersey. Assured Automation is an ISO 9001:2015 certified supplier of automation equipment serving manufacturing, chemical, and pharmaceutical industries among others. Assured Automation offers products in 2 major product lines: valves and flow meters. Valves include compact on/off valves, actuated 2-way and 3-way ball valves, actuated butterfly valves, actuated plug valves, actuated globe valves, manual gate valves, manual valves, lead free brass valves, thermal and remote shutoff valves, valve actuators, and valve & actuator accessories. Flow meters include water meters, fuel meters, industrial flow meters, lube-oil meters, and others.
Hayward Flow Control was founded in 1923 and operates out of Clemmons, North Carolina. Hayward Flow Control is a manufacturer of industrial thermoplpastic valves and process control products. Hayward Flow Control product lines include thermoplapstic valves such as ball valves and butterfly valves, Hayward Filtration & Straining line, Hayward Actuation line including actuators and actuated valves, pressure & flow control valves, corrosion resistant pumps, instrumentation, bulkhead fittings & tank accessories, end connections, and other parts and accessories.
Pepperl+Fuchs, Inc. was founded in Mannheim, Germany in 1945 developing the forerunner of the proximity switch. Pepperl+Fuchs continues to develop proximity sensors as well as other industrial sensors including ultrasonic sensors, rotary encoders, positioning systems, display and signal processing, vibration monitoring, industrial communication, and signal processing as well as related accessories and software. Explosive protection products include safety barriers, surge protection, wireless solutions, HMI systems, power supplies, electrical explosion protection equipment, level measurement, and related software.
OMEGA Engineering was originally begun in 1962 as a manufacturer of thermocouples and has grown to over 100,000 products for measurement and control of temperature, humidity, pressure, strain force, flow, level pH, and conductivity as well as customer service including data acquisition, electric heating, and custom-engineered products. Additionally, OMEGA offers tools to serve as reference for engineers around the world. OMEGA Engineering serves the aerospace, automotive, wireless, sanitary, test & measurement, process control, power monitoring, environmental, and laboratory markets.
OTTO, established in 1961 in Carpentersville, Illinois, is a manufacturer and a supplier of control switches and audio accessories. The company offers a full line of products, including control grips used in heavy equipment, aerospace, marine, medical, and communication industries. Besides, OTTO provides quality products with its strong mechanical, electrical, and RF design engineering capabilities. The company is vertically integrated for in-house injection molding, CNC machining, and cable assembly, resulting to unmatched quality. OTTO's selling point lies in its world-class testing, ensuring steady performance of products for unique and demanding applications worldwide.
Joyce/Dayton Corp. was established in 1873 and is headquartered in Kettering, Ohio. The ISO 9001:2015 certified company is a manufacturer of screw jacks, actuators, and lifting equipment to customers in aluminum smelting, marine, solar energy, and nuclear industries across North America through external distributors. The company’s product segments include screw jacks, actuators, cylinders, solar products, and others. Solar products include solar tracking jacks and actuators as well as custom solar trackers designed to enhance the efficiency of standard solar panels.
PLC Hardware (PLCH) was founded in 1993 and operates out of Owings Mills, Maryland. PLCH is an independent distributor of used and surplus industrial automation and networking equipment. PLCH offers a 1-year warranty on all products and ships globally. PLCH’s emphasis is on hardware and distributes hardware from such brands as Cisco, HP Networking, Rockwell Automation and Siemens. A few of the many categories of hardware include application networking products, cables, optical networking systems, routers, switches, rack servers, content delivery devices, as well as HVAC controllers, and safety integrated systems.
Stephens Manufacturing was started in 1957 in Tompkinsville, Kentucky. Stephens is a manufacturer and distributor of concrete-related equipment. Categories include ready mix plants, precast plants, central mix plants, RCC, environmental, and material handling. Ready mix batch plants that generally have quicker installation. Precast plants are custom built. Portable mixers mix RCC and other mixes. Environmental components include dust collectors, reclaimers, and wash down racks. Material handling includes batchers, bins, hoppers, silos, conveyors, and vertical pigs. Stephens offers assistance in customer problem solving and delivers to customers globally.
BI-TORQ Valve Automation was founded in 1981 and is now part of STRAHMAN Group. BI-TORQ is a distributor of plant optimization and safety products including valves and actuators used in oil & gas, food & beverage, manufacturing, pharmaceutical, and other industries. The company’s primary product lines include thermal shut-off valves, ball and butterfly valves, actuators, and knife gates. The company also sells accessories & repair kits including limit switches, NAMUR solenoids, and spring return handles.
Taylor Material Handling & Conveyor has a 50 year history and operated out of Toledo, Ohio, serving regionally as well as nationwide customers as a distributor for machines and components used in the industrial, material handling, chemical, appliance, automotive, construction, forging, and founding industries. Taylor offers a full line of conveyors ranging from automation conveyors to wire mesh belt conveyors. Taylor also offers below the hook attachments, ergonomic lifting solutions, forklift service lifts, hoists, trolleys, electrifications, product packaging equipment, overhead lifting solutions, packaging automation, warehouse equipment as well as custom equipment.
Twittlebit.com is located in Lexington, Kentucky. Twittlebit is a distributor of industrial equipment and components divided into 8 sub-stores including: sensors, HMI & PLC, visual & audio , panel components, and pneumatic & vacuum. The company offers next day delivery to Kentucky and neighboring states, and 2-to-3-day delivery to most other states of in-stock products. The company offers in-stock selection of many top brands such as Autonics, EEControls, Panasonic, and Cembre. The company can also in-source many hard to find products directly from Japan from companies such as IDEC, Canon, Omron, and Fuji Electric in 7-to-10-days.
The Rowland Company was founded in 1732 in Philadelphia, Pennsylvania when Benjamin Franklin was just 25 years old. Today the Rowland Company specializes in the distribution, fabrication, and assembly of industrial power transmission products, including application engineering, and modification of products to customer needs. Industries served include commercial laundry, amusement parks, marine, metalworking, power generation, pulp & paper, transit, water treatment and wastewater treatment Rowland Company’s product categories include air starters, brakes, clutches, crane controls & electrification, flexible couplings, friction and wear materials, gearboxes, industrial lighting & signals, mobile crane brake parts, universal joints, and driveshafts.
Del Val Controls, Inc. is based in West Chester, Pennsylvania. Del Val is a distributor and consultant for customers in chemical process, refining, pharmaceutical, and biotechnology industries. Del Val Controls products are used in specific applications including analyzing, batching, calibration, chromatography, fermentation, fracking, gas handling, OEM, pilot plant operations, pneumatic conveying, steel, and water treatment. Del Val Controls product categories include actuators, bubble traps, clamps, controllers, excess flow valves, filters, fittings, flow controllers, flow meters, flow switches, hoses, level transmitters, valves, and more.
LOVATO Electric S.p.A., founded in 1922 and based in Bergamo, Italy, is a manufacturer and designer of low-voltage electrical devices for industrial applications. The company offers a wide range of products such as Motor Protection circuit breakers, Contractors, electromechanical starters and relays, variable speed drives, and soft starters among others. The company holds UNI ISO 45001: 2018, ISO 1400: 2015, and ISO 50001: 2018 certificates. The company’s laboratories are certified to conduct type testing under ACAE control to issue ACAE certifications which are recognized by the European Union and valid across the wold.
GIOVENZANA INTERNATIONAL B.V., established in 1952 and based in Italy, is a manufacturer of safety components for industrial technology. The company operates in the areas of automation, handling systems, lift-elevator, and atex and iecex. The company's components adhere to the ISO 9001:2015 Quality System and ISO 14001:2015 Environmental Standard by constantly monitoring the environment. The company’s European and international standards-certified products are sold in 75 countries. The buildings like the contemporary Burj Khalifa in Dubai, which has more than 160 floors, and the Eiffel Tower in Paris both utilised the company's materials.
Schmersal Group, founded in 1967 and located in Boituva, São Paulo, Brazil, is a manufacturer of safety switching devices, offering more than 18,000 control mechanisms and devices. The company specializes in producing electromechanical and electronic switching devices for three key business areas: security technology, automation, and elevator technology. Its product portfolio includes safety switching devices, control and signaling devices, proximity sensors, foot switches, actuating cable switches, among others. The company’s products are manufactured mainly for the American markets.
Highly Electric Co., Ltd. was established in 1974 in New Taipei City, Taiwan, as a manufacturer of industrial switches. The company provides a diverse range of products, including safety door limit switches, snap-action switches, toggle switches, rocker switches, foot switches, and sensors, among others. These components have diverse applications: safety door limit switches enhance machinery safety; snap-action switches offer swift switching; toggle and rocker switches control functions; foot switches enable hands-free operation; and sensors detect and transmit crucial data for automation and robotics. The industrial sectors where these components find applications include manufacturing, electronics, machinery, appliances, automotive, medical, and automation.
Actuonix Motion Devices was founded in 2004 and is now headquartered in Saanichton, British Columbia. The company is a manufacturer of micro linear actuators and linear servos for several markets including robotics, aerospace, automotive, medical, and radio control. The company offers custom micro linear actuators to OEMs globally. The company’s additional product types include limited switch actuators, PLCs, stepper motor actuators, control boards, and accessories. The company provides an actuator selector tool to assist customers to choose models that meet their needs.
Fuji Electric FA Components & Systems Co., Ltd., established in 2008, the company is a result of a merger between Fuji Electric FA Components & Systems and the Japanese arm of Schneider Electric S.A., the second largest manufacturer in the same field, is a manufacturer of control instruments, such as electromagnetic switches that use electromagnets to open and close the contact points of electrical circuits. The company have a global presence, offering many power-receiving and distributing devices that can be used in cross-border markets through its wide range of products that conform to major standards in the world.
Azbil Europe NV is based in Germany and was founded in 1906 as a manufacturer and supplier of automation products and solutions. The company designs Industrial Control Communication devices like Digital Controllers, and Flame Safeguard Systems, along with Electromagnetic, Differential Pressure, Vortex Gas, and Thermal Flowmeters. They also deal in sensors and switches and their list of Industrial Automation products includes Field Instruments and Control Valves. Together these components serve the Oil and Gas market, the Pharmaceutical industry, and the Electronics and Electrical equipment industry.
Panasonic Industry Europe is the European branch of Panasonic, a global manufacturer of electronics and houseware, originally founded in 1918. Panasonic Industry Europe manufactures in 4 categories: components, devices, energy & building, and automation devices & solutions. Components include relays, capacitors, resistors, sensors, switches, connectors, couplers. Devices include wireless connectivity, e-bike systems, motors, compressors, thermal solutions, GPS antennas, as well as electronic materials. Energy & building includes batteries, fuel cells, solar sells, power tools, and home IoT. Automation devices & solutions include sensors for factory automation, industrial motors, laser welding, and more.
The Carlo Gavazzi Group is a multinational company that was established in 1931 in Milan, Italy, known for designing, manufacturing, and distributing electronic equipment and automation solutions. The company offers a wide range of products that includes automation components such as monitoring relays, sensors, timers including electronic controls. There are also energy management solutions, and these products are supplied to industrial manufacturers of semiconductors, plastic machinery, agriculture, HVAC, and mobile equipment to name a few. Building automation companies and renewable energy services also benefit as they streamline their operations, reduce energy costs, and increase productivity.
Ravioli SPA is an Italian company founded in 1975 by its founder, Umberto Ravioli and it is a manufacturer of electromechanical devices. The company specializes in manufacturing electromechanical devices, including rotating sockets, hanging buttons, industrial safety remote controls, bipolar connectors for electric traction, and DC conductors. These products find applications in agriculture, lifting and construction, energy and environment, automation, electric traction, telecommunications, and the nautical industry. The company obtained its ISO certification in the 1990s and also holds CE marking conformity certifications.
TEND, founded in Taiwan in 1972, is a manufacturer and supplier of electrical components. The company's main products include circuit breakers, thermal protectors, switches, and sensors, catering to various industries such as electronics, appliances, and automotive.TEND's electrical components play a vital role in ensuring safety and reliability in electrical systems and equipment. With a priority on research and development, TEND continuously introduces itself to meet the evolving needs of its customers and industries.TEND's devotion to excellence and quality has earned them a solid status as a good provider of electrical components.
Festo Corporation, established in 1925 and headquartered in Esslingen, Germany, is a supplier of automation technology and technical education and is ISO 9001, ISO 13485, and ISO14001 certified. It has around 33,000 catalog products, customized components, and ready-to-install solutions, including grippers, motors, and sensors used in industrial and process automation. The company won the German Future Award in 2010 and serves 300,000 customers worldwide, while its education division provides training solutions for 56,000 industrial companies and educational institutions. It registered €3.81 billion in the 2022 financial year and is available in around 60 countries, with 2,600 patents worldwide.
Omron Corporation, started in 1933 and headquartered in Kyoto, Japan, is a manufacturer of automation components, equipment, and systems, and it developed the first contactless proximity switch in 1960. It has four domains, including industrial automation, electronic components, healthcare, and social systems, and it provides products and services in around 120 countries and regions. Some of its products include microsensing devices, access control systems, industrial robots, surveillance cameras, and blood pressure monitors. In 1971, it developed the first online cash machine, and in 1972, it established Japan’s first welfare factory.
Matsushima Measure Tech Co., Ltd. was founded in 1946 in Kitakyushu, Japan, as a manufacturer and solution provider for measurement, environmental monitoring, and automation by sensor technologies. The company's product portfolio consists of 80 GHz radar level transmitters, FMCW radar, sounding M's, and dust monitors. It also provides solutions including continuous level measurement, point level detection, and reference powder measurement. The products and solutions excel in continuous level measurement, enhance precision in distance measurements, and provide point-level detection solutions while ensuring the safe handling of powdered materials. The company serves various industries, including manufacturing, construction, mining, machinery, cement, and electricity.
Crouzet was established in 1921 and is based in Valence, France is a manufacturer of electromechanical and electronic components for applications in various industries. The company provides switches & sensors, electromechanical actuators, electrical protection equipment, cockpit controls, automation controllers & relays, and instrumentation services for the aerospace, transportation, energy, building construction, and machinery manufacturing industries as well as medical, safety, and environment protection sectors. They have been committed signatories of the United Nations Global Compact initiative since 2022 and are certified with ISO 9001, IATF 16949, and UL-Lab norms.
Crouzet was founded in 1921 and is headquartered in France. The company is an independent manufacturer of mechatronic components for applications in the aerospace, energy, building, and machinery industries. The company offers four primary product categories: Switches & Sensors, Aerospace, Motion, and Automation & Control. Aerospace includes cockpit controls, electrical protection, and various position sensors. These are designed to increase pilot comfort and improve flight safety. Motion includes motors, actuators, and external control electronics. Automation & Control includes both hardware and software solutions.
Balluff was founded in 1921 and is headquartered in Neuhausen, near Stuttgart, Germany. Balluff is a manufacturer of sensor and automation solutions for customers globally. Balluff serves many industries including life sciences, semiconductors, metalworking, fluid power, and mobile equipment. Balluff’s product line consists of sensors and connectivity components, accessories, complete systems, and software. Balluff offers services to assist customers across the range of finding solutions, deploying solutions, training, as well as support.
Ametek CTS is a manufacturer of RF power amplifiers and EMC compliance testing products that was established in Reinach, Switzerland, in 2017 following the merger of the Ametek, Inc. brand EM Test, Teseq, IFI and Milmega. The company offers electrostatic discharge and ring wave testers for consumer electronics, solid state and immunity testing systems for the aerospace industry, and electrical disturbance and flicker testers for the automotive industry. It also offers testers and amplifiers for the medical and defense sectors. The company is ISO 17025-certified and operates internationally, with notable clients such as Raytheon and Honda.
Schlegel is the manufacturer and distributor of switches, push buttons, terminal blocks, and pilot lights with their headquarters in Germany since 1974. Besides switches and simple push buttons, the company also produces membrane and short-stroke pushbuttons, functional modules, control panels, enclosures, and limit switches which can be customized according to the consumer's demands. The products are widely used in departmental stores and administrative buildings. They are also used within the instrument panels of ships, lifts, and other vehicles including machine tools or as components of production equipment.
FUYU Technology Co., Ltd, established in 2011 in Chengdu, Sichuan Province, China, is a manufacturer and supplier of linear motion system intelligent products. The company's product range includes Ball Screw Linear Guides, Belt Driven Linear Guide, Miniature Series, High Precision Series, and Linear Motor Module. These products find vital applications across industries such as medical, automation, and electronics. The company also offers services such as electric actuator development, multi-axis positioning stage design, Cartesian robot motion control, and OEM solutions.
Fuji Electric Equipment Control was established in 2008 in Saitama-ken, Japan is a manufacturer of power distribution and control equipment. The company boasts an extensive and diversified product portfolio including motor controls, MV distributors, energy control equipment, LV distributors, and industrial control relays. These products find applications in construction as magnetic contactors, automotive as manual motor starters, home appliances as air circuit breakers, health care devices as sensors and switches, and in environmental management for quality assurance and protection of high-voltage electric power and management of low-voltage consumption rate.
Jamieson Equipment Company (JEC) was founded in 1982 and located in the state of Georgia. JEC serves infrastructure-related industries including pavement with concrete, aggregate, and asphalt, chemicals, sewage and waste management, and agriculture and food. JEC sells, installs, retrofits, repairs, and offers training and troubleshooting for a range of components and tools from simple fittings to motion sensors to electronics to valves to actuators, cranes, mixers, silos, hoppers, and plants.
BERNSTEIN AG is a manufacturer and distributor of electromechanical components that was established in 1947 in Germany. The company manufactures switches and sensors that range from insulated and metal enclosed to foot switches and safety switchgear. They also provide enclosure technology that deals with the implementation of support systems for various applications such as using housing to accommodate electrical, electronic, or pneumatic components and load-bearing systems made of aluminum and stainless steel. They also offer safety solutions related to the operation of lifts and escalators that are placed in malls and airports
Rockwell Automation, Inc. was founded in 1903 and is headquartered in Milwakee, WI. Rockwell Automation provides industrial automation and digital transformation solutions around the world. Rockwell Automation operates through their intelligent devices, software & control, and lifecycle services segments with both hardware and software products and services. The Intelligent Devices segment offers drives, motion, safety, sensing, industrial components, and configured-to-order products. The Software & Control segment provides control and visualization software and hardware, information software, and network and security infrastructure solutions. The Lifecycle Services segment provides consulting, professional services and solutions, and connected and maintenance services through independent distributors.
OMRON Industrial Automation is the UK branch of OMRON, originally founded in Japan in 1933. OMRON Industrial Automation serves food and beverage industry, panel board design, automotive manufacturing industries among others. OMRON Industrial Automation products categories include automation systems such as industrial PCs and human machine interfaces (HMI), safety such as safety switches and safety logic control systems, switching components such as solid state relays, motion & drives such as motion controllers, sensing such as photoelectric sensors, software, robotics, quality control & inspection systems, as well as control components including power supplies and digital panel indicators.
Classic Automation based in Webster, New York is a parts distributor and repair servicer for installed controlled systems, drives, and servo motors, as well as a purchaser of well-maintained surplus systems. Parts that Classic Automation distributes and repairs include DcS, PPLC, and CNC control systems, panel controllers, HMI panels, display panels, drives, encoders, resolvers, and power supplies. Classic automation also offers hard drive repair services and support for customizing functionality in Panelicity controllers.
AutomationDirect.com was founded in 1994 to provide solutions for the industrial automation market and has been growing its list of offerings ever since. AutomationDirects’ extensive catalog includes individual components such as cables, various controls, I/O devices, relays, gauges, fittings, and sensors to complete systems. Many parts and devices, especially PLC units are customizable. AutomationDirect.com also provides support via video instructions, online manuals, a learning library, an active community forum to further assist customers.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | K. A. Schmersal GmbH & Co. KG |
5.3%
|
| 2 | Burger & Brown Engineering, Inc. |
4.6%
|
| 3 | Tapeswitch Corp. |
4.2%
|
| 4 | Assured Automation |
4.0%
|
| 5 | Stephens Mfg. Co., Inc. |
3.2%
|
| 6 | Hayward Flow Control |
3.2%
|
| 7 | Banner Engineering Corporation |
3.2%
|
| 8 | Matsushima Measure Tech Co., Ltd. |
3.2%
|
| 9 | Joyce/Dayton Corp. |
3.0%
|
| 10 | Georg Schlegel GmbH & Co. KG |
3.0%
|
Derivation Method
The ranking is calculated based on the click share within the limit switch page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
17 | 56.7% |
|
Italy
|
3 | 10.0% |
|
Germany
|
3 | 10.0% |
|
Taiwan
|
2 | 6.7% |
|
Netherlands
|
1 | 3.3% |
|
Canada
|
1 | 3.3% |
|
Japan
|
1 | 3.3% |
|
Belgium
|
1 | 3.3% |
|
Switzerland
|
1 | 3.3% |
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Nippon Sokki Co., Ltd.
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Last viewed: 1 day ago
■MT series DC 10A (UL, CSA) Magnetic blowout contact design for DC applications Various actuators and terminations, 25.4mm center side mount ■Prod...
Nippon Sokki Co., Ltd.
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Last viewed: 53 minutes ago
■914CE series North American specification Miniature, metal housing Pre-lead or connector, 25mm mounting center IP65/66/67 sealing. cURus/CE certif...
Nippon Sokki Co., Ltd.
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Last viewed: 1 hour ago
■GLE series Min-Din EN50047 compatible installation Metal housing IP66 sealing, 20-22mm/40-42mm mounting holes UL/CSA/CE/CCC certification ■Produc...
Nippon Sokki Co., Ltd.
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Last viewed: 54 minutes ago
■SSCE series Miniature, metal housing PUR pre-leaded cable, 25mm mounting center IP65/66/67 sealing. CE certified ■Product overview Ultra-sealed M...
Nippon Sokki Co., Ltd.
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Last viewed: 2 minutes ago
■TB series Double break contact design UL, CSA 10A contacts 2 circuits (1NC/1NO) or 4 circuits (2NC/2NO) ■Product overview MICRO SWITCH TB series ...
Nippon Sokki Co., Ltd.
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Last viewed: 46 minutes ago
■BAF series Metal Housing NEMA 1, 3, 4, 13 Sealing, 101mm x 41mm Mounting Center UL/CSA Approved ■Product overview The elastomer boot of the encap...
Nippon Sokki Co., Ltd.
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Last viewed: 43 minutes ago
■GLF series Din EN50041 mounting. Metal housing non-plug-in LED pilot lamp 1pc IP67 sealing, 30mm x 60mm mounting holes UL, CSA, CE, CCC certificat...
Nippon Sokki Co., Ltd.
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Last viewed: 1 hour ago
■SZL-VL-S series Miniature housing Direct opening contacts (side rotary only) IP67 sealing, 21mm x 56mm mounting center CCC/CE/cULus compliant ■Pr...
Nippon Sokki Co., Ltd.
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Last viewed: 2 minutes ago
■WA series 20A, SPNC various actuators and terminations, 25.4mm ctrs side or panel mount ■Product overview Boasting high accuracy, reliability and...
Nippon Sokki Co., Ltd.
10+ people viewing
Last viewed: 1 hour ago
■BF series Plastic housing NEMA 1, 3, 4, 13 sealing. UL certification ■Product overview BF series plastic encapsulated basic switches are availabl...
Nippon Sokki Co., Ltd.
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Last viewed: 1 hour ago
■GLG series Din EN50041 mounting. Metal housing plug-in LED pilot lamp 1pc IP67 sealing, 30mm x 60mm mounting holes UL, CSA, CE, CCC certification ...
Nippon Sokki Co., Ltd.
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Last viewed: 44 minutes ago
■SZL-WL series EN50041 mounting Metal housing IP67 sealing, 30mm x 60mm mounting center UL/CE/CSA certified ■Product overview MICRO SWITCH SZL-WL ...
Nippon Sokki Co., Ltd.
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■WM series 22 A. SPNC. Various actuators and terminations, 25.4mm ctrs side or panel mount ■Product overview Boasting high accuracy, reliability a...
Nippon Sokki Co., Ltd.
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Last viewed: 1 hour ago
■Product overview The MICRO SWITCH BX/BX2 series is designed for applications around the world in hazardous and explosive environments where rugged...
Nippon Sokki Co., Ltd.
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Last viewed: 49 minutes ago
■GLH series Din EN50041 mounting. Metal housing Non-plug-in 2 LED pilot lamps IP67, 30mm x 60mm mounting holes UL, CSA, CE, CCC certification ■Pro...
Nippon Sokki Co., Ltd.
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Last viewed: 1 hour ago
■Product overview MICRO SWITCH VPX switches are specifically designed for outdoor use in hazardous environments. The switch enclosure is constructe...
Nippon Sokki Co., Ltd.
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Last viewed: 1 minute ago
■WZ series 15 A. SPNC. Various actuators and terminations, 25.4mm ctrs side or panel mount ■Product overview Boasting high accuracy, reliability a...
Nippon Sokki Co., Ltd.
10+ people viewing
Last viewed: 53 minutes ago
■Product overview The MICRO SWITCH BX/BX2 series is designed for applications around the world in hazardous and explosive environments where rugged...
Nippon Sokki Co., Ltd.
10+ people viewing
Last viewed: 1 hour ago
■GLL series Min-Din EN50047 mounting. Plastic housing Integrated actuator IP66 sealing, 20mm to 22mm mounting, CULus/ce/CCC certification ■Product...
