1st UL 489 Branch Circuit with GFR

Product Announcement from Altech Corp.


Altech has the most complete line of UL Ground Fault Protection products in the industry.

GFL Series (5A - 40A)
10kA UL489 Listed Branch Circuit Breaker with
Equipment Ground Fault Protection (RCBO)

First, there is the UL 489 Branch Circuit with Ground Fault Relay which is the 1st in the industry! Since it includes a UL 489 Branch Circuit Protector, in many cases there is no need for upstream circuit protection. It comes in 1+N and 2+N poles at 240V AC and 120/240V AC. It has a rated Current of 5 - 40A. It also has Rated Short Circuit, Interrupt Capacity 10kA, a Rated Frequency of 50/60Hz and Overload tripping B, C and D.

The GFL Series range is a combined Branch Circuit Breaker and Equipment Ground Fault Protector, featuring dual pole switching (live and neutral disconnect) and designed to provide protection against short circuits, overloads, AC ground faults (residual current faults) as well as pulsating DC ground faults.

GF Series (up to 63A)
480Y/277V AC Ground Fault Sensing
and Relaying Device (RCCB)

Secondly, the UL 1053 comes in 2 and 4 poles at 277V AC and 480Y/277V AC. It has a Rated Current of 25, 40 and 63A. It also has a Rated Short Circuit, Withstand Capacity of 10kA and a Rated Frequency of 50/60Hz.

The GF Series of Equipment Ground Fault Protection Relays (Earth Leakage Protection) is the latest addition to Altech's UL Listed product range, providing ground fault (residual current) protection for circuits with loads up to 63A. Short Circuit Withstand rating is 10kA.

GFR Series (5A - 40A)
480Y/277V AC Ground Fault Relay
with Overload Protection (RCBO)

Thirdly there is the UL 1077 model comes in 2 and 4 poles at 277V AC and 480Y/277V AC. It has a Rated Current 5 - 40A. It also has a Rated Short Circuit, Withstand Capacity of 10kA, a Rated Frequency 50/60Hz and Overload tripping B, C and D.

The GFR Series is a combined Equipment Ground Fault Relay and Supplementary Protector (RCBO), featuring dual pole switching (live and neutral) and designed to provide protection against overloads and AC ground faults (residual current faults) as well as pulsating DC ground faults. Short Circuit Withstand rating is 10kA.

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