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This section provides an overview for ground fault relays as well as their applications and principles. Also, please take a look at the list of 14 ground fault relay manufacturers and their company rankings. Here are the top-ranked ground fault relay companies as of December, 2024: 1.CR MAGNETICS, INC., 2.NK Technologies.
Table of Contents
A ground fault relay is a device connected to an electrical circuit that detects abnormal voltage and activates an alarm through the operation of a relay.
It operates in two basic modes: open mode and closed mode. In each mode, the relay is either open or closed under normal conditions. The operational principle involves detecting abnormal voltage, which then switches the relay contacts, activating the alarm function.
In open mode, the relay interrupts the current flow by being open under normal conditions and closes its contacts when an abnormality is detected, allowing current to flow. Similarly, in closed mode, the relay switches to an open state when an abnormality is detected, interrupting the current flow. This results in actions such as sounding an alarm or activating warning lights.
*Including some distributors, etc.
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Becker/SMC LLC., established in 1971 and based in Bristol, Virginia, is a manufacturer of electrical components and belongs to Becker Mining Systems Group of Companies. Its product portfolio includes power distribution equipment, longwall electrical controls, and motor starts. It also sells vacuum switches, electronic monitoring devices, and transformers. The company designs, manufactures, and commissions electrical systems from start to finish, and its power centers range from 1000kva to 12MVA. Its switch houses comply with MSHA and CSA and are designed up to 27KV and 1200 Amps. It mainly serves the power and electrical industries and has over 1,500 MSHA-certified enclosures.
Littlefuse was founded in 1927 and headquartered in the United States. Littlefuse is a diversified industrial technology manufacturing company with customers globally. Littlefuse has products segments which are electronic, industrial, and transportation. Electronic segment products include fuses and fuse accessories, positive temperature coefficient resettable fuses, polymer electrostatic discharge suppressors, and varistors. Transportation products include blade, resettable, and high-current and high-voltage fuses, as well as battery cable protectors; fuses, switches, relays, circuit breakers, and power distribution modules. The Industrial segment offerings include contactors, transformers, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems.
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.
NK Technologies, founded in 1982 and based in San Jose, California, is a manufacturer of sensing products and current measurement solutions. Its portfolio of over 1,300 models includes current sensing switches, signal converters, and AC transducers. The company’s ground fault relays allow the system designer to decide what the relay output needs to do if a fault in the ground is sensed. The products are RoHS 3 compliant and conflict-free, and some selected products are listed as UL and CE. The company is ISO 9001 and ISO 14001 certified and provides a 5-year product warranty.
CR MAGNETICS, INC. provides a complete line of sensors, transducers and components, providing the most cost-effective and sophisticated product available, as well as expert engineering assistance and custom-designed products for those tough applications. Our Mission is to provide our customers with the Highest Quality products and innovative solutions for current, voltage, and power monitoring applications, worldwide
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | CR MAGNETICS, INC. |
50.0%
|
| 2 | NK Technologies |
50.0%
|
Derivation Method
The ranking is calculated based on the click share within the ground fault 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
|
2 | 50.0% |
|
France
|
1 | 25.0% |
India
|
1 | 25.0% |
