17 Auxiliary Relay Manufacturers in 2023
This section provides an overview for auxiliary relays as well as their applications and principles. Also, please take a look at the list of 17 auxiliary relay manufacturers and their company rankings.
Table of Contents
What Is an Auxiliary Relay?
Generally, a relay controls a circuit breaker or other switchgear when a sudden change in power or voltage occurs in a power system, and immediately disconnects the abnormal part from the system.
Therefore, in order to increase the reliability of the relay, it is necessary to detect sudden changes in power and voltage with high sensitivity.
Therefore, an auxiliary relay is equipped with two contacts (twin contacts) to increase the degree of contact compared to a general relay and to detect the above changes with high sensitivity, even if the load is very small.
It is also called contactor relay.
Uses of Auxiliary Relays
Auxiliary relays are used in control circuits.
Auxiliary relays are used in general relays to increase contact reliability even when the contact is low.
In many electrical circuits, including control circuits, there is a risk of a ground fault occurring when some of the conductors make contact with the ground.
Ground faults can damage electronic elements, so the risk must be minimized. Especially in the case of small loads, the ground fault current is so small that an auxiliary relay is used that can detect its value with high sensitivity.
Principle of Auxiliary Relays
Auxiliary relays are similar in shape to electromagnetic contacts, but differ in the number of contacts.
Auxiliary relays have the twin-contact structure described above, which provides higher contact reliability than general relays. As a result, it can handle loads as small as 5 VDC and 3 mA.
When opening and closing minute loads, contact resistance of the contacts can be a problem.
If a high contact resistance is accidentally generated, it may be recovered by the next opening/closing.
Therefore, it is not easy to determine whether a contact resistance value occurs with a small load is a failure or not.
Therefore, the use of an auxiliary relay increases the number of contacts provided in the relay and improves the contact reliability.
There are auxiliary relays with up to 16 contacts.
Auxiliary relays are available in surface-mounted and embedded types, which can be selected according to the situation.
List of 17 Auxiliary Relay Manufacturers
*Including some distributors, etc.
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NOARK Electric North America
Auxiliary Relays
Company Overview
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.
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ABB E-mobility
Auxiliary Relays
Company Overview
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.
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Win Source Electronic Technology Ltd.
Auxiliary Relays
Company Overview
WIN SOURCE is a customer-focused online store serving a wide variety of markets industries ranging from consumer to automotive to medical, industrial, and aerospace. WS specializes on size and speed, offering a catalog of over 1 million SKUS that can be shipped within 24 hours around the world. Offerings include an extensive array of semiconductor components, audio products, cable assemblies, racks, and battery products. WIN SOURCE is AS9120B, ISO9001, ISO14001, and ISO45001 certified and is a member of the anti-counterfeiting organization, ERAI.
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Industrial Electric Machinery
Auxiliary Relays
Company Overview
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.
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PHOENIX CONTACT
Auxiliary relays
Company Overview
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.
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Schneider Electric
Auxiliary Relays
Company Overview
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.
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Techspan Industries Inc.
Auxiliary Relays
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Saddle Brook Controls
Auxiliary Relays
Company Overview
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.
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Auburn Armature, Inc.
Auxiliary Relays
Company Overview
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.
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Auxiliary Relay Manufacturer Ranking
*Including some distributors, etc.Number of Employees
- PHOENIX CONTACT: 20,300
Newly Established Company
- Zhejiang Aokai Electric Co.,Ltd.: 2008 (15 years ago)
- Super Engineering Works: 1982 (41 years ago)
- PHOENIX CONTACT: 1923 (100 years ago)
Company with a History
- Schneider Electric: 1871 (152 years ago)
- PHOENIX CONTACT: 1923 (100 years ago)
- Super Engineering Works: 1982 (41 years ago)
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