Ground Fault Products
NEMA Type 4X
Typical Applications Include:
Power Generators, Spas, High Pressure Washers, Power Centers, Refineries and Mobile Power.
The sensing module functions interdependently with a magnetic branch circuit breaker. The module monitors the electrical
circuit by use of an external differential current transformer. No direct load is present at the module. In the event of a ground
fault, the load is interrupted by way of the hydraulic magnetic circuit breaker utilizing a shunt trip coil.
This line of Sensing Modules is rated from 1 to 50 Amps and circuit current-carrying conductors from 1 to 3 poles.
Product is available with an automatic or manual “safe start” reset feature. The enclosure, when mounted with the supplied
gasket, achieves a UL NEMA Type 4X Rating. This module and breaker system is ideal for portable generator integration
protecting all outlets on a generator. This system meets the proposed requirements for generators Underwriters Laboratory
Standard 2201. UL/cUL 943 Listed, Class A 4-6mA trip level and UL1053 Compliant.
GFCI Sensing Module, 50A Maximum
Description
Catalog Number
120V AC Sensing Module Auto
GFSM120A
120V AC Sensing Module Manual
GFSM120M
240V AC Sensing Module Auto
GFSM240A
240V AC Sensing Module Manual
GFSM240M
GFCI Sensing Module Circuit Breakers
Catalog Number Configurator
Ground Fault Sensing
Module Circuit Breaker
GFSM120M
A/C Voltage
Amperage
1
GFSM120A or M
120
2
GFSM120A or M
2
GFSM240A or M
120/240
2
GFSM120A or M
120/240
3
GFSM120A or M
240
GFSMCB120401P
Sensing Module Required
120
GFSMCB
Example Catalog Numbers:
Number
of Poles
1 to 50
GFSMCB120401P:
GFSMCB240502P:
GFSMCB120240203P:
120V, 40A, 1 Pole
240V, 50A, 2 Pole
120/240V, 20A, 3 Pole
Note: Voltage tolerance +10% / -15%.
Consult factory for other available configurations.
Wiring Schematics
GFSMCB120xx1P
Current carrying leads must
be twisted as they go through
the sensing module.
CIRCUIT
BREAKER
LOAD
PART #
AUTO GFSM120A
MAUUAL GFSM120M
120VAC GFCI
SENSING
MODULE
NO
C
GFSMCB240xx2P
ORANGE
SHUNT
JUMPER
Current carrying leads must
be twisted as they go through
the sensing module.
H
240VAC GFCI
SENSING
MODULE
LOAD--->
NO
C
N
WHITE
BLACK
YELLOW (SHUNT)
120VAC GFCI
SENSING
MODULE
LOAD--->
L2
L1
N
120/
240V AC
IN
SINGLE PHASE 240VAC (L1, L2, GRND)
G
GROUND
CIRCUIT
BREAKER
ORANGE
SHUNT
JUMPER
L2
LOAD
PART #
AUTO GFSM120A
MAUUAL GFSM120M
LINE
RED
BLACK
YELLOW (SHUNT)
SINGLE PHASE 120VAC (HOT, NEUTRAL, GRND)
Current carrying leads must
be twisted as they go through
the sensing module.
L2
L1
L2
240V AC
IN
120V AC
IN
GROUND
GFSMCB120240xx3P
ORANGE
SHUNT
JUMPER
L1
LOAD
PART #
AUTO GFSM240A
MAUUAL GFSM240M
LINE
H
N
CIRCUIT
BREAKER
NO
C
L1
LOAD--->
LINE
N
WHITE
BLACK
YELLOW (SHUNT)
SPLIT PHASE 120/240VAC (L1, L2, N, GRND)
G
GROUND
G
Dimensions in Inches (mm)
K-12
®
Wiring Device-Kellems
www.hubbell-wiring.com
Download PDF
Similar pages