Industry ‘First’ UL 489 Ground Fault Equipment Protector

Product Announcement from Altech Corp.


Altech® Introduces Industry ‘First’ UL 489 Ground Fault Equipment Protector Augmenting Complete Lineup to Help Prevent Costly Production Shutdowns 

A complete line of UL Ground Fault Equipment Protection (GFEP) devices from Altech Corp.® – including an industry “first” – introduce ideal solutions to help prevent costly production shutdowns due to AC and DC pulsating ground faults, as well as overloads and (with some models) short circuits.  The technology lineup – unmatched in the industry – offers three highly engineered series of devices delivering multiple capabilities and promoting reliable protection and operation of equipment wherever and whenever ground faults may occur.  In all three series, ground fault sensitivity levels range from 10 mA – 500 mA.

The UL 489 Branch Circuit Breaker with Ground Fault Relay (GFL Series) represents an industry “first” by combining a Ground Fault Equipment Protector with a UL 489 Branch Circuit Protector, which eliminates a need for upstream circuit protection.  This device is available in 1 pole+N, 2 pole, and 2 pole+N configurations at 120/240V AC and 240V AC.  Rated current is 5A-40A and rated Short Circuit Interrupt Capacity is 10kA.  Three trip curves (B, C, and D) can be specified.

The UL 1053 Ground Fault Sensing and Relaying device (GF Series) provides residual current protection for circuits with loads up to 63A.  This model is designed with 2 and 4 poles at 277V AC and 480Y/277V AC, rated current of 25A, 40A, and 63A, and rated Short Circuit Withstand Capacity of 10kA.  This device represents an ideal retrofit GFEP where standard overload and short circuit protection is already being provided (or will be provided) by other means.

The UL 1077 Ground Fault Relay with Overload Protection (GFR Series) serves as a combined Equipment Ground Fault Relay and Supplementary Protector (RCBO).  The device can be supplied with 2 and 4 poles at 277V AC and 480Y/277V AC and with a rated current of 5A-40A.  Rated Short Circuit Withstand Capacity is 10kA and three trip curves (B, C, and D) are offered.  

These three series are the latest additions to Altech’s UL listed product range dedicated to meet the most demanding conditions and applications across industries.  Altech further provides comprehensive product support and the capability to develop customized solutions to meet particular requirements.

Click here for more information.

About Altech Corp.®

Altech Corp. is a supplier and distributor of electronic and control components. Altech’s product line includes industrial enclosures, terminal blocks, fuses, circuit breakers, disconnect switches, inductive proximity sensors, DIN enclosures, interface modules, foot switches, liquid tight strain reliefs, safety relays, safety switches, European fuses, PIN & sleeve devices, power supplies, test & measurement, tower lights and wire ducts.