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WEG Molded Case Circuit Breakers - User’s Manual
3
2. INSTALLATION
The installation procedure consist of inspecting the circuit breaker and, as
applicable, installing the trip unit and rating plug, accessories, interphase
barriers, and terminals; mounting the circuit breaker; connecting the line and load
conductors; torquing terminals and attaching terminal shields. Circuit breaker
frames, trip units, rating plugs, accesories, mounting hardware, and unmounted
terminals may be supplied in separate packages. To install the circuit breaker,
perform the following steps.
1. Make sure that the circuit breaker is suitable for the intended installation by
comparing nameplate data with existing equipment ratings and system
requirements.Inspect the circuit breaker for completeness, and check for
damage before mounting. Uninstalled cover mounting hardware is supplied in a
plastic bag with the circuit breaker frame (see Figure 2 and Table 2).
Flat head, thread
forming screws
Pan head screws
Figure 2:
cover mounting hardware
3-pole
No. 8 x 1.88 in, Flat-head
6
.190 - 32 x 3.125 in, Pan-head
2
Table 2:
cover mounting hardware
2. Remove installed cover screws and cover.
NOTICE
The circuit breaker handle must be in the tripped or OFF position to remove the cover.
Instructions for installing the trip unit and accessories are supplied with the devices.
3. If not already installed, mount trip unit and accessories (if required) in circuit
breaker frame.