SNT120CPK EATON CUTLER HAMMER, SNT120CPK Datasheet - Page 214
![Shunt Trip](/photos/21/79/217902/4613112_sml.jpg)
SNT120CPK
Manufacturer Part Number
SNT120CPK
Description
Shunt Trip
Manufacturer
EATON CUTLER HAMMER
Datasheet
1.EHMVD06B.pdf
(276 pages)
Specifications of SNT120CPK
Operating Voltage
120VAC
For Use With
EG And JG Frame Series G Circuit Breakers
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12
Type GFR
Series C Molded Case Circuit Breakers
Add-On Ground Fault Protection
Product Description
GFR Relay
Product Description
Eaton’s Cutler-Hammer GFR ground
fault relays, current sensors, test
panels and accessory devices are UL
listed by Underwriters Laboratories
in accordance with their standard for
Ground Fault Sensing and Relaying
Equipment, UL 1053, under File
E48381.
Note: Suitable for either surface or semi-
flush mounting.
A Type GFR ground fault protection
system, when properly installed on a
grounded electrical system, will sense
phase-to-ground fault currents. When
the level of fault current is in excess
of the pre-selected current pickup and
time delay settings, the GFR relay will
initiate a trip action of a disconnect
device, which will open the faulted
circuit and clear the fault.
The GFR devices are UL Class I devices
designed to protect electrical equip-
ment against extensive damage from
arcing ground faults.
A basic Type GFR ground fault protec-
tion system consists of a ground fault
relay, a ground fault current sensor
and a disconnect device equipped with
a shunt trip device. This disconnect
device can be a molded case circuit
breaker, a power circuit breaker, a
bolted pressure switch or other fusible
disconnect device, suitable for applica-
tion with UL Class I Ground Fault
Sensing and Relaying equipment.
Note: Relays are also listed with CSA under
their file number 43357.
For more information visit: www.eaton.com
Sensor
■
Electrical Ratings
GFR Relay
■
■
■
600 volt, 50/60 Hz maximum system
voltage.
Ground fault detection ranges:
❑
Output contacts:
❑
❑
❑
❑
Control power requirements:
❑
1 to 12, 5 to 60 or 100 to 1200
amperes
240 volt, 50/60 Hz: 3.0 amperes
120 volt, 50/60 Hz: 6.0 amperes
28 Vdc: 3.0 amperes
125 Vdc: .5 amperes
120 volt, 50/60 Hz or 125 Vdc
(optional)
Typical Current Sensor
November 2008
CA08101001E
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