Altech Circuit Protection Devices

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UL Ground Fault Equipment Protectors

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

The selection includes
(Click title to go to that section)

GFL Series (5A - 40A)
10kA UL489 Listed Branch Circuit Breaker with Equipment Ground Fault Protection (RCBO)
GF Series (up to 63A)
480Y/277V AC Ground Fault Sensing
and Relaying Device (RCCB)
GFR Series (5A - 40A)
480Y/277V AC Ground Fault Relay
with Overload Protection (RCBO)

Application Examples

Wire insulation “Surveillance”
Motor winding failure detection
Production Equipment which can’t afford uncontrolled shutdown
Pre-short circuit detection

Industries

Chemical Plants
Refineries
Waste Water Treatment Plants
Semiconductor Facilitie
Pharmaceutical Plants
Plants near water (salt water especially)

Ground Fault Request Form
& Specification pages are below.

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Individual Specifications Sheets
– including wiring diagram examples
& CAD Files

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

The UL 489 Branch Circuit with Ground Fault Relay 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 pole, 2 pole and 2 pole +N configurations at 240V AC, 120/240V AC. It has a rated current of 5 - 40A. It also has a Rated Short Circuit Interrupt Capacity of 10kA and comes in Overload tripping curves B, C and D. The Rated Frequency is 50/60Hz.

Series / Pole / Trip / mA

GFL Series - 1 Pole+N

GFL 2 Pole

GFL-1P+N-B-10mA.pdf
GFL-1P+N-B-30mA.pdf
GFL-1P+N-B-100mA.pdf
GFL-1P+N-B-300mA.pdf
GFL-1P+N-C-10mA.pdf
GFL-1P+N-C-30mA.pdf
GFL-1P+N-C-100mA.pdf
GFL-1P+N-C-300mA.pdf
GFL-1P+N-D-10mA.pdf
GFL-1P+N-D-30mA.pdf
GFL-1P+N-D-100mA.pdf
GFL-1P+N-D-300mA.pdf

GFL DWG
GFL STEP

Series / Pole / Trip / mA

GFL Series - 2 Pole

GFL 2 Pole

GFL-2P+B-10mA.pdf
GFL-2P+B-30mA.pdf
GFL-2P+B-100mA.pdf
GFL-2P+B-300mA.pdf
GFL-2P+C-10mA.pdf
GFL-2P+C-30mA.pdf
GFL-2P+C-100mA.pdf
GFL-2P+C-300mA.pdf
GFL-2P+D-10mA.pdf
GFL-2P+D-30mA.pdf
GFL-2P+D-100mA.pdf
GFL-2P+D-300mA.pdf

GFL DWG
GFL STEP

Series / Pole / Trip / mA

GFL Series - 2 Pole + N

GFL 2 Pole

GFL-2P+N-B-10mA.pdf
GFL-2P+N-B-30mA.pdf
GFL-2P+N-B-100mA.pdf
GFL-2P+N-B-300mA.pdf
GFL-2P+N-C-10mA.pdf
GFL-2P+N-C-30mA.pdf
GFL-2P+N-C-100mA.pdf
GFL-2P+N-C-300mA.pdf
GFL-2P+N-D-10mA.pdf
GFL-2P+N-D-30mA.pdf
GFL-2P+N-D-100mA.pdf
GFL-2P+N-D-300mA.pdf

GFL DWG
GFL STEP

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

The UL 1053 approved device comes in 1 pole + N and 3 pole + N at 277V AC, 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 providing ground fault (residual current) as well as pulsating DC ground fault protection for circuits with loads up to 63A.

Series / Pole / Trip / mA

GF Series - 1 Pole+N

GFL 2 Pole

GF-1P+N-10mA.pdf
GF-1P+N-30mA.pdf
GF-1P+N-100mA.pdf
GF-1P+N-300mA.pdf

GF DWG
GF STEP

Series / Pole / Trip / mA

GF Series - 3 Pole+N

GFL 2 Pole

GF-3P+N-30mA.pdf
GF-3P+N-100mA.pdf
GF-3P+N-300mA.pdf

GF DWG
GF STEP

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

The UL 1077/1053 device comes in 1 pole + N and 3 pole + N at 277V AC, 480Y/277V AC. Rated Current ranges from 5 - 40A. It also has a Rated Short Circuit Withstand Capacity of 10kA, and comes in Overload tripping curves B, C and D. The Rated Frequency is 50/60Hz.

The GFR Series is a combined Equipment Ground Fault Relay and Supplementary Protector (RCBO) is designed to provide protection against overloads and AC ground faults (residual current faults) as well as pulsating DC ground faults.

Series / Pole / Trip / mA

GFR Series - 1 Pole+N

GFL 2 Pole