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WEG Molded Case Circuit Breakers - User’s Manual
6
5. If not already installed, mount terminals as shown in Figure 4. When using
terminal (Catalog No.LTI UBW250), secure the terminal to the circuit breaker
using a 1/8-inch socket wrench and torque to 6-8 lb.-ft (8-11 N.m). After
mounting the circuit breaker and before installation of the conductors, the
terminal mounting screw can be checked or retightened through the terminal
when the conductor screw is removed. When using terminal (Catalog No.
LTI UBW250), secure the terminal to the circuit breaker using screw and nut.
Torque to 7-9 lb.-in (0.8-1.0 N.m).
LTI UBW250 terminal
LTI UBW250 terminal
Collar
Collar
Nut
Socket screw
Flat-head
screw
Terminal
connections
Figure 4:
terminal installation
WARNING
The voltages in energized equipment can cause death or severe personal
injury. Before mounting the circuit breaker in an electrical system, make
sure there is no voltage present where work is to be per formed. Special
attention should be paid to reverse feed applications to ensure no voltage
is present.
NOTICE
Depending on the equipment configuration, the circuit breaker can be mounted using
different styles of hardware. The following steps describe how to mount the circuit
breaker using standard hardware. When special hardware is needed (for example,
with the electrical operator), the instruction leaflet describing the accessory also
describes the special mounting arrangements.
6. To mount the circuit breaker, perform the following steps:
a. For individual surface mounting, drill mounting panel using the drilling
plan shown in Figure 5. For panelboard mounting, only load end support
mounting holes are required. For deadfront cover applications, cut out cover
to correct escutcheon dimensions (see Figure 6).
