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General Information
Eaton Series G Moulded Case Circuit Breakers provide increased
performance in considerably less space than standard circuit
breakers or comparable fusible devices.
The “G” signifies global applications:
Series G circuit breakers are marked with UL, CSA , CE, IEC and
KEMA KEUR listings. Other advantages include:
.
Field-fit accessories.
.
Common accessories through 630 amperes.
.
Electronic trip units from 20 to 2500 amperes.
.
UL-listed and IEC-rated, 30 mA ground fault/earth leakage
modules.
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Built-in ground fault protection down to 20 amperes.
The GE, GJ and GL frames are new circuit breakers designed
around space-saving footprints. The GN and GR use the proven
CutlerHammer
Series C
ND
and RD designs but use metric threading on their line and load
conductors.
Eaton Series G Circuit Breakers meet applicable UL 489 and IEC
60947-2 standards.
The Eaton Series G family includes five frame sizes in ratings
from 15 to 2500 amperes. Series G offers a choice of several
interrupting capacities up to 100 kA at 480 volts ac (200 kA at
240 volts ac).
Standard calibration is 40°C. For applications in high ambient
temperature conditions, 50°C factory calibration is available on
thermal magnetic breakers.
The Most Logically Designed
Contact Assembly
The flexibility and outstanding performance characteristics of
Eaton Circuit Breakers are made possible by the best contact
designs in circuit breaker history. Our patented technology
creates a high-speed “blow-open” action using the
electromechanical forces produced by high-level fault currents.
Eaton Circuit Breakers are operated by a toggle-type mechanism
that is mechanically trip-free from the handle so that the
contacts cannot be held closed against short circuit
currents.Tripping due to overload or short circuits is clearly
indicated by the position on the handle. This remarkably fast
and dependable contact action is designed to enhance safety.
Thorough In-Plant Testing
The quality, dependability and reliability of every Eaton
Circuit Breaker is ensured by a thorough program of in-plant
testing. Two calibration tests are conducted on every pole of
every circuit breaker to verify the trip mechanism, operating
mechanism, continuity and accuracy.
ISO Certification
Eaton Circuit Breakers are manufactured in ISO certified
facilities.
Current Limiting Characteristics
Eaton Series G Circuit Breakers are current limiting because of
their high repulsion contact arrangement and use of
state-of-the-art arc
extinguishing technology.
Operating Mechanisms
Eaton Circuit Breakers have a toggle handle operating mechanism,
which also serves as a switching position indicator. The
indicator shows the positions of: ON, OFF and TRIPPED.
The toggle handle snaps into the TRIPPED position if the breaker
is tripped by one of its overcurrent, short circuit, shunt or
undervoltage releases.
Before the circuit breaker can be reclosed following a trip-out,
the toggle handle must be brought beyond the OFF position
(RESET). The circuit breaker can then be reclosed.
As
an additional switching position indicator for GE- to GR-Frame
circuit breakers, there are two windows on the right and on the
left of the toggle handle, in which the switching state is
indicated by means of the colors red, green and white
corresponding to the ON, OFF and TRIPPED positions respectively.
OFF RESET ON Tripped
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