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This section provides an overview for auxiliary relays as well as their applications and principles. Also, please take a look at the list of 21 auxiliary relay manufacturers and their company rankings. Here are the top-ranked auxiliary relay companies as of December, 2024: 1.Schneider Electric SE, 2.ELKO EP HOLDING, SE., 3.Techspan Industries Inc..
Table of Contents
An auxiliary relay, or electromagnetic relay, controls the opening and closing of its contacts through an electromagnet. Functioning similarly to electromagnetic switches, auxiliary relays differ in contact configurations, facilitating precise control in protective and control relay circuits.
Employed primarily in control circuits, auxiliary relays enhance the reliability of contact connections, supporting applications requiring low energizing currents (under 10A). They're pivotal in safety mechanisms like interlocks, ensuring operational control under specific conditions, and enhancing ground fault detection to prevent accidents.
Auxiliary relays incorporate make (a-contact), break (b-contact), and transfer (c-contact) contacts to manage circuit connections effectively. This versatility allows for adaptive use in various electrical configurations.
Comprising a coil wrapped around an iron core, an electromagnet, and contacts, auxiliary relays activate circuits by magnetically pulling together movable iron pieces, enabling contact closure. Their design often includes a twin-contact structure for improved reliability, especially for minute electrical loads.
Auxiliary relays are notable for their diverse contact configurations, accommodating from 2 to 16 contacts to meet specific circuit requirements. They are designed for a range of voltage specifications, ensuring compatibility with different electrical systems. The compact, lightweight design supports easy installation and high contact reliability, making these relays suitable for various applications, including space-constrained control panels.
*Including some distributors, etc.
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Mors Smitt Technologies Inc. stands as a manufacturer and supplier of components for the railway and industrial sectors, founded in 1851 and headquartered in Ede, Gelderland. Its portfolio includes relays, safety-critical electronics like circuit breakers and sensors, and precise measuring and control solutions such as data loggers and controllers. Notably, its offerings extend to panel indicators like digital displays and warning lights, as well as test equipment such as insulation testers and relay testers. With subsidiaries in the UK, Germany, and the US, Mors Smitt is a pivotal player in delivering solutions for signaling, safety, and control in critical applications.
Springer Controls Co.- Wind Turbine Division, founded in 1996 and located in Yulee, Florida, US, is a distributor of wind turbines. Its wind turbine segment concentrates on offering automation and control solutions for generating wind energy as a sustainable and environmentally friendly energy source. The company provides different wind turbine products, such as grease systems, lighting, and lubrication. It also specializes in rotary gear limit switches for wind generators. The grease systems and lubrication encompass piston pumps, grease, and gear.
Industrial Electric Machinery, also known as IEM, was originally founded in 1988 as Northwest Motor Service. IEM serves industrial customers with products and services including motors, relays, transformers, UPS batteries, and more. IEM offers 4 primary product categories: Controls such as low voltage VFDs and transformers, gearboxes & couplings, motors, and power distribution including MCCs and automatic transfer switches. IEM also offers field service including 24/7 availability for troubleshooting, analysis, calibration, field testing, and repairs. Additional services such as training courses and warehousing of spare equipment is also available.
Flame Enterprises, Inc., founded in 1969, is a distributor of electro-mechanical items for military and aerospace fields in Gledhill Street, Chatsworth, CA. The company products are mid-range relays, circuit breakers, contactors, status indicators, and illuminated pushbuttons. It also distributes LED panel indicators, motor protectors, heating elements, and relay sockets used in power distribution, switching, thermal management, interconnection, and switching applications. The establishment is AS9120 certified, DDTC registered, TRACE certified, and CMMC compliant.
Vanterm, established in 1971 and based in Gebze, Turkey, is an ISO 9001-certified manufacturer of air filtration solutions and dust collectors. Some of the items it sells include filter towers, mobile filter units, and spark separators, which can be used in several sectors, including odor filtration, woodworking, and CNC dry machining. The company also stocks workbenches, extraction arms, and extension cranes. In addition, it provides supplementary accessories required to increase the effectiveness of the extraction system, such as modular hoods, precoating units, and ventilators.
Zhejiang Aokai Electric Co., Ltd. is a manufacturer of ADH high voltage DC relays, ANR series of DC relays, contact kit, and others, founded in 2008, and is located in Liushi Town, Wenzhou City. The company produces high voltage contactors, contact assemblies, and metal stamping parts. Its products are applicable in electric vehicles, charging points, battery cars, and UPS. The company offers full line production from metal molds to the parts and final products, It also works with several companies such as ABB, Audi, GOODWINCH, and TMAX.
Ashida Electronics Pvt. Ltd. was originally founded in 1970 as a manufacturer of geo-engineering and water management systems, it became a manufacturer of power system protection relays in 1985 and it is located in Thane, India. The company specializes in SCADA and SCADA software systems, and it provides numerical, static, and auxiliary protection relays. The company products include protection relay, control panels, and bay control units. It also offers customized solutions, onsite replacement warranty, and turnkey solutions and the company is ISO 9001:2015 certified.
Super Engineering Works is an electrical components manufacturer established in 1982 in Delhi, India. While being specialized in electrical control and signaling devices, the company's product line includes various types of products, including but not limited to Electrical Control & Signalling Devices, CAM Rotary and Toggle Switches, and Industrial Hooters. It offers cutsomization services, making its products present across the Indian continent. Additionally, this business is holds diverse multiple quality standards, such as the ISO 9001:2015, ROHS, and CE certificates.
Schneider Electric S.E. is headquartered in Rueil-Malmaison, France, and has been operating since 1836. Schneider Electric provides a number of products and services including electrical car charging, energy management software, surge protection devices, load banks, servers and HMIs, valve and valve actuators, feeder automation, grid automation, and SCADA software products, data center cooling and software, home automation and security, light switches, motion control and robotics, signaling units, solar and energy storage, RFID systems, as well as other hardware, services, and software.
NOARK is based in Pomona, California, and is a global manufacturer of low-voltage electrical components for industrial applications. NOARK specializes in motor controls and protection for original equipment and manufacturers with products covered by five-year limited warranties. NOARK parts are used in numerous solutions such as HVAC and refrigeration, industrial food equipment, panel builders, digital storage, and engine generators. NOARK’s main product lines include low-voltage power circuit breakers, molded case circuit breakers, miniature circuit breakers, overload relays, and circuit control devices.
ABB E-mobility provides electric vehicle charging solutions for customers around the globe. ABB E-mobility offers DC fast chargers as well as AC chargers with focus on reliability and uptime. Since 2010, ABB E-mobility has sold over 50,000 DC fast chargers and over 1 million total AC chargers. ABB E-mobility offers home single and multi-charge units, retail, workplace, and hospitality charge units, electric vehicle fleet sales, as well as public transportation. Additionally, numerous digital solutions and software services are available.
HTC Electric Co. is a manufacturer and supplier of industrial electrical products, located in Zhejiang Province, China. The company supplies low voltage electricals, meters, wire cables, electrical switches, and others. The company is a major supplier of relays, circuit breakers, time switches, and fuses. Its products include mini PCB relays, auxiliary relay, mini circuit breakers, and electronics time switches. Quality assurance checks are conducted at its manufacturing plants and warehouses to ensure quality products.
ELKO EP HOLDING, SE., established in 1993, and located in Holešov, Czech Republic, is a manufacturer, distributor, and supplier of electronic equipment for residential, office, and industrial automation. The company offers a range of products including time relays, time switches, dimmers, controlling & signaling units, and thermostats, which serves in industries such as resindential, commercial, industrial, infrastructure, and transportation. Its products are used for efficient control and management of various electrical functions.
Phoenix Contact is headquartered in Blomberg, Germany, originally founded in 1923. Phoenix Contact’s Israeli subsidiary was founded in 2006 and located in Quadima Tzoran. Phoenix Contact provides tools and components for e-mobility, power, infrastructure, process industry, production manufacturing, system manufacturing, and others. Phoenix Contact’s product lines include automate including cloud computing, connect including PCB terminal blocks, “mark, assemble, and install” including hand tools, “supply, charge, and protect” including power distributors, and “switch, measure, and monitor” including relays and optocouplers.
Tech Span Industries Inc. is headquartered in Mississauga, Ontario. The company is a distributor of hardware supplies for construction, manufacturing, and other markets to both commercial and individual customers. The company has two product lineups: electrical, and automotive. Across both lineups, the company has five product divisions: cord grips, extreme weather cable ties, megalumens, pin and sleeve connectors, and wire & cable. The company provides accompanying technical guides and assistance for assistance with installation and operation.
Saddle Brook Controls is a division of Ribble Engineering, which was founded in 1933 in Saddle Brook, New Jersey. Saddle Brook Controls is a manufacture as well as a designer, distributor, and support service provider of automation solutions for factory automation. Product groups include PLCs, controllers, Remote IO devices, HMIs, industrial computers, machine vision and inspection machines, motion devices, drives, motor controls, enclosures, circuit breakers, safety products, sensing and control products, power supplies, and UPS.
Auburn Armature was founded in 1946 and headquartered in Auburn, New York. Auburn Armature is a distributor of electrical products and was recently purchased by Power-Flo Technologies of New Hyde Park, New York. Services that Auburn Armature provide include training, testing, rebuilding, repair, troubleshooting, and training. Parts that Auburn Armature specialize in include automation systems, AC and DC drives, motor controls, motors, motion controls, connectors, wire, boxes, cables, sensors, relays, transformers, panels, struts, terminal blocks, lighting supplies, and conduits.
Altech Corporation, founded in 1984 and headquartered in Flemington, New Jersey, is a supplier and distributor of electronic and control components and is ISO 9001 certified. The company provides a broad line of products, including programmable controllers, monitoring relays, and terminal blocks, used in instrumentation, industrial control, and automation applications. The company’s enclosed disconnect switches are available in different materials like stainless steel, plastic, and aluminum and have a use rating of 16A to 150A/600V AC. The products are all RoHS and REACH compliant and meet diverse national and international standards like IEC, CSA, and UL.
Yaskawa America Inc., started in 1967 and based in Waukegan, Illinois, is a manufacturer of machine controllers, industrial robots, and variable frequency drives and is part of Yaskawa Electric Corporation. Some of its products include industrial AC drives, machine controllers, and IEC programmable robots. The company incorporates the Kaizen method of continuous incremental improvements and Total Quality Management processes to prevent manufacturing defects, and its distributors must be certified and re-certified every two years. It is ISO 9001 certified and is the only industrial drives and motion control manufacturer to win the Deming Medal.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | ELKO EP HOLDING, SE. |
10.9%
|
| 2 | Techspan Industries Inc. |
10.9%
|
| 3 | Schneider Electric SE |
10.9%
|
| 4 | Industrial Electric Machinery |
8.7%
|
| 5 | PHOENIX CONTACT |
8.7%
|
| 6 | Zhejiang Aokai Electric Co.,Ltd. |
4.3%
|
| 7 | Springer Controls Co.- Wind Turbine Division |
4.3%
|
| 8 | Mors Smitt Technologies Inc. |
4.3%
|
| 9 | Auburn Armature, Inc. |
4.3%
|
| 10 | Saddle Brook Controls |
4.3%
|
Derivation Method
The ranking is calculated based on the click share within the auxiliary relay 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
|
4 | 30.8% |
|
China
|
2 | 15.4% |
|
India
|
2 | 15.4% |
|
Turkey
|
1 | 7.7% |
|
France
|
1 | 7.7% |
|
Czech Republic
|
1 | 7.7% |
|
Germany
|
1 | 7.7% |
| Iran | 1 | 7.7% |
Hikari Shoko Co., Ltd.
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This is a ground fault directional relay mainly used for single circuits. Zero-sequence voltage and zero-sequence current can be detected. Voltage ...
Hikari Shoko Co., Ltd.
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Mainly used for branch circuits. Detects zero-sequence current. Voltage elements are supplied by LDG-73/83 series or LVG-7/8 series. ■Features ・A...
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This is a ground fault directional relay mainly used for single circuits. Zero-sequence voltage and zero-sequence current can be detected. Voltage ...
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Used in conjunction with an earth ground transformer (EVT). Use with LDG-73V/83V or LVG-7V/8V. CF-107V is for EVT/190V, CF-107AV is for EVT/110V. ...
Hikari Shoko Co., Ltd.
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This is a ground fault directional relay mainly used in the main circuit. Detects zero-sequence current and zero-sequence voltage. The detected zer...
Hikari Shoko Co., Ltd.
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This is a ground fault directional relay mainly used for single circuits. Zero-sequence voltage and zero-sequence current can be detected. Voltage ...
Kyuden Techno Systems Co., Ltd.
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■Protective device This is a microprocessor type device that quickly and accurately detects failures in power system transmission lines and distrib...
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Hikari Shoko Co., Ltd.
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If an isolation transformer is used at the power receiving end of a private consumer, a ground fault relay is installed to detect ground faults in ...
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■For current trip method Models with voltage tripping methods such as LDG-71/73, LEG-107/108, LEG-109, LEG-192 are replaced with normally closed ci...
Hikari Shoko Co., Ltd.
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■Features ・A microcomputer is used in the electronic circuit. - High reliability as it has a self-diagnosis function. ・You can select whether or ...
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Performs circuit breaker tripping operation ■Features ・Compliant with JIS C 4603. -Small and lightweight compared to batteries. ・Even if the pow...
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Denkosha Co., Ltd.
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■Summary A protective relay is a device that detects faults such as short circuits and ground faults that occur in power lines and power equipment ...
