Specifications

Installation Instructions
6
Installation of Electronic Trip Unit
The SB breaker has a built-in interlock device that prevents the
breaker from being closed when there is not an installed trip
unit.This same interlock device will trip the breaker when the
trip unit is removed.
Electronic Trip Unit Installed into Circuit Breaker
Steps 1 through 9.
1. Remove 8 screws from breaker front cover.
To install the trip unit, the front cover of the breaker must first
be removed.This is done by removing the four (4) recessed
Phillips head screws in positions 2, 3, 6, and 7, along with the
four (4) Phillips head screws in positions 1, 4, 5, and 8, which
hold the front cover in place.
2. Lift off front cover.
DANGER
Hazardous Voltage.Will cause death or serious injury.
Turn off and lock out all power supplying the device prior to
cover(s) removal or while cover(s) are removed and when
installing any internal or external accessory.
Replace the cover(s) and shield(s) before power supplying
this device is turned on.
CAUTION
Do not attempt to install a trip unit
with the breaker “Closed” or “Charged”.
Make certain breaker is “Open” or
“Discharged” as shown above. Personal
injury or mechanical damage may occur.
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