Internal Accessories
41
Electric Motor Operator
Electric Motor Operator Kit
Electric Motor Operator
An electric operator provides for electric charging of the
springs of the stored energy mechanism, remote closing,
spring charging status indication, latch checking, and anti-
pump functions. The standard wiring scheme of the electric
operator is such that the springs are automatically recharged
after each closing operation. This can be modified by the
customer if desired
The electric operator is installed in the front compartment of
the SB breaker. The main contact status check switch is
installed on the right side, behind the trip unit and beneath the
reset plate. All other components of the electric operator are
installed on the left side. The motor fuse is accessible from the
front panel .
The principal components of the electric operator are a
charging motor, motor controller, gear box, cam mecha-
nism, closing solenoid, motor fuse, and check switches to
monitor the positions of the mechanical components. The
charging motor, gear box, and cam mechanism are inte-
grated into a single assembly at the factory. Electric opera-
tors may be selected to operate with a source power of 120V
ac or 24, 48, or 125V dc. The microprocessor based
controller provides voltage-independent charging time, charg-
ing status indication, and software-controlled closing logic for
the electric close function.
1.) Install the cam mechanism, gear box and motor assem-
bly
2.) Align the keyway of the shaft with the keyway of the
charging arm.
Courtesy of NationalSwitchgear.com
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