Cut Sheet

Volume 4—Circuit Protection CA08100005E—August 2015 www.eaton.com V4-T2-305
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2.3
Molded Case Circuit Breakers
Series C
The electrical (motor) operator
allows the circuit’s breaker to
be opened, closed or reset
remotely. It also has a lock-off
capability and provisions for
manual operation.
The electrical (motor)
operator contains a reversible
motor connected to a ball
screw. The ball screw drives
the circuit breaker handle.
Limit switches and relays are
used to control the motor.
Plug-In Adapters
Plug-in adapters simplify
installation and front removal
of circuit breakers. Individual
line and load plug-in
adapters are available for
rear connection applications
on two-, three-, and four-pole
circuit breakers. Common
mounting plates for line-
and load-end adapters
are available.
One plug-in adapter kit is
required for line-end and
one for load-end.
Plug-in adapters are
UL approved unless
otherwise noted.
Rear Connecting Studs
Rear connecting studs are
available in several sizes to
accommodate specific fixed-
mounted circuit breaker
applications.
Each rear connecting stud
assembly consists of one stud
and one tube. To maintain
proper clearances between
poles, select alternate long
and short stud assemblies for
circuit breakers with more
than one pole. One assembly
is required for line-end and
one for load-end of each pole.
Tubes must be ordered
separately. Connecting studs
are available only with English
thread sizes.
Note: Not UL listed.
Panelboard Connecting Straps
Panelboard connecting straps
are used to connect the
circuit breaker terminals to
the panelboard bus. The
panelboard connecting straps
are available with various
ratings for outside and center
poles. (Field installation only.)
Panelboard connecting straps
are available to meet the
needs of most standard
panelboard applications.
Style numbers for mounting
brackets for CDP panelboard
installations are also included.
Note: Not UL listed. Refer to
panelboard manufacturer for
compatibility.
Type LFD Current Limiter
The LFD current limiter is an
accessory that bolts to the
load end of a standard FDB or
FD thermal-magnetic circuit
breaker, providing 200,000 A
interrupting capacity at up to
600 Vac. LFD current limiters
for thermal-magnetic and
electronic circuit breakers
are listed with Underwriters
Laboratories under File
E47239.
Ground Fault Alarm Unit
The ground fault alarm unit is
a remotely mounted device
with a combination indicating
light/test button that will light
when the breaker trips or
alarms on ground fault. The
ground fault alarm unit
requires a separate 120 Vac
power source to power the
light and the internal relay,
which has 1NO and 1NC
contacts for remote indication.
The ground fault alarm unit
can be panel mounted for
ordering with an optional face
mounting bracket. For use on
Digitrip 310 only, K- through N-
Frame.
IQ Energy Sentinel
The IQ Energy Sentinel
is a highly accurate,
microprocessor-based,
breaker-mounted device
designed to monitor power
and energy readings. It
represents an alternative to
watt meters, watt-hour
meters, and watt demand
meters. Key advantages
include savings in space,
lower installation costs, and
remote monitoring capability.
The IQ Energy Sentinel
mounts on the load side
of a Series C F-Frame
(150 ampere) circuit breaker.
It can be applied on three-
phase, four-wire systems,
or single-phase, three-wire
systems with voltage
connected through
Phases A and C.
For more information, see
Descriptive Bulletin 8178.
Potential Transformer Module
The potential transformer
module is required for the
Digitrip OPTIM 1050 to
provide a voltage input to
allow the trip unit to monitor
power and energy as well as
power factor. The potential
transformer module is a 6 VA
transformer with a primary
voltage input of up to 600 volt
line to line. Three 0.1 ampere
fuses are provided on the
primary of the transformer
and can be used for isolation
purposes during dielectric
testing. The device is
normally panel mounted
and can feed up to 16 OPTIM
trip units.
Solid-State (Electronic) Portable
Test Kit
The solid-state (electronic)
portable test kit provides
verification of performance
of all ratings of Digitrip 310
electronic trip units installed
in circuit breakers while in
service under varying load
and/or phase imbalance. The
test kit operates on 120-volt,
50/60 Hz power; it includes
complete instructions and test
times for testing long time,
short time/instantaneous
operation and optional
ground fault operation of
the circuit breaker.