TM 5-3895-374-24-1
Door Interlock Operation
WARNING There is a hazard of electric shock or
burn whenever working on or around electrical
equipment. Turn off power supplying thus
equipment before working inside motor control
centers. Operating motor control units with doors
open or not properly secured is potentially
dangerous and can result in personal injury.
I-19
The operating handle cannot unintentionally be
moved to the ON position when unit door is
open. This feature gives protection to operating
and maintenance personnel Another interlock
prevents opening unit door when circuit is
energized.
Operating Mechanism Adjustment
1-20
The circuit breaker operating mechanisms are
factory adjusted. To readjust the operating
mechanisms, move the drive fork and tighten the
set screws so that the circuit breaker turns ON
just as the handle touches a test rod placed as
shown. Test rods are 5/16" (8mm) for FA circuit
breakers and 1/4" (6mm) for KA circuit breakers
RESET
check.
Operate
push-to-trip
button.
RESET circuit breaker
Unit Door Adjustment
1-21
The
unit
doors
are
factory
adjusted;
if
misalignment has occurred during transit, adjust
the clearance to 3/32” (3mm) between each unit
door while it is in the open position.The mounting
screw clearance in the hinges will permit door
adjustment as the screws are tightened.
(Page 3-130)
