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SECTION 1. GENERAL INFORMATION
GE Conversion Kit installation is straightforward, but
does require careful workmanship and attention to
these instructions. Familiarity with the breaker is
highly desirable. The general approach is to first
remove the existing trip devices from the breaker,
then install the ProTrip components. Following this
procedure, the converted breaker is performance
tested before it is returned to service.
The majority of trip unit kit installations do not
require any customized assembly work. However,
some conversions may involve unusual mounting
conditions or accessory combinations that require
minor modifications and/or relocation of compo-
nents. In most instances, this supplementary work
can be done on site.
In preparation for the conversion, the installer should
verify that the appropriate current sensors and trip
unit have been furnished. Whenever a ProTrip kit is
installed on a breaker with a four-wire system, an
associated neutral sensor (CT) is required for
separate mounting in the equipment. Ensure that
retrofitted breakers are applied within their short-
circuit ratings. For example, if the previous trip unit
provided long-time instantaneous protection, the
short-time rating of the ProTrip Trip Unit will govern
the application.
As a service-related consideration, the installation of
a ProTrip kit provides an excellent opportunity to
perform normal maintenance on the breaker, par-
ticularly when the front and back frames are sepa-
rated. Such procedures are described in the instal-
lation and maintenance manuals supplied with the
breaker and equipment.
SECTION 2. BEFORE INSTALLATION
Before starting any work, turn off and lock out all
power sources leading to the breaker, both primary
and secondary. Remove the breaker to a clean, well-
lighted work area.
WARNING: Low-voltage power circuit breakers use
high-speed, stored-energy spring operating
mechanisms. The breakers and their enclosures
contain interlocks and safety features intended to
provide safe, proper operating sequences. For
maximum personnel protection during installation,
operation, and maintenance of these breakers, the
following procedures must be followed. Failure to
follow these procedures may result in personal
injury or property damage.
• Only qualified persons, as defined in the
National Electrical Code, who are familiar with
the installation and maintenance of low-voltage
power circuit breakers and switchgear assem-
blies, should perform any work on these break-
ers.
• Completely read and understand all instructions
before attempting any breaker installation,
operation, maintenance, or modification.
• Turn off and lock out the power source feeding
the breaker before attempting any installation,
maintenance, or modification. Follow all lock-
out and tag-out rules of the National Electrical
Code and all other applicable codes.
• Do not work on a closed breaker or a breaker
with the closing springs charged. Trip an OPEN
breaker and be sure the stored-energy springs
are discharged, thus removing the possibility
that the breaker may trip OPEN or the closing
springs discharge and cause injury.
• Trip the breaker OPEN, then remove the breaker
to a well-lighted work area before beginning
work.
• Do not perform any maintenance that includes
breaker charging, closing, tripping, or any other
function that could cause significant movement
of a draw-out breaker while it is on the draw-out
extension rails.
• Do not leave the breaker in an intermediate
position in the switchgear compartment. Always
leave it in the CONNECTED, TEST, or
DISCONNECTED position. Failure to do so could
lead to improper positioning of the breaker and
flashback.