9
User Manual
MN013016EN
Effective July 2022
Magnum PXR and Power Defense SB low
voltage power circuit breakers user manual
EATON
www.eaton.com
On drawout circuit breakers shipped without a cassette, two shipping
clamps hook into the breaker side plates and are held to the pallet
with four lag screws (
) . Remove the lag screws and clamps .
Save the screws and clamps for future shipment of the breaker . On
empty cassettes, remove the four or five lag screws and/or machine
screws that pass through the floor pan of the cassette holding it to
the wooden pallet . On drawout breakers shipped in a cassette, first
remove the breaker from the cassette using the levering mechanism
and drawout rails . After the breaker is removed, the machine screws
passing through the floor pan can be removed .
On fixed breakers, remove the lag screws passing through the
mounting feet that hold the breaker to the pallet .
Circuit breakers are designed to be easily lifted from the wooden
pallet using an appropriate lifting yoke and overhead or portable
lifting device (
) .
Shipping clamp
Figure 4. Shipping clamps for drawout circuit breaker
Figure 5. Magnum circuit breaker with lifting yoke attached
(Magnum DS shown)
Storing the circuit breaker
If it is necessary to store a circuit breaker before installation, do
so in its original shipping container . Keep the circuit breaker in a
clean dry place . Ensure there is ample air circulation and heat, if
necessary, to prevent condensation . It is very important that the
circuit breaker not be exposed to dirt or moisture .
m
NOTICE
A CIRCUIT BREAKER THAT HAS BEEN STORED FOR ANY LENGTH OF TIME
SHOULD BE OPERATED A MINIMUM OF FIVE TIMES BEFORE IT IS PLACED
IN SERVICE.
Lifting circuit breaker
m
CAUTION
DO NOT ATTEMPT TO LIFT CIRCUIT BREAKERS WITH ORDINARY CRANE
HOOKS, ROPES, CHAINS, OR OTHER SUCH DEVICES. FAILURE TO FOLLOW
THIS CAUTION COULD RESULT IN DAMAGE TO VITAL PARTS, SUCH AS ARC
CHUTES, BARRIERS, AND WIRING, OR THE ENTIRE CIRCUIT BREAKER.
To closely examine, install, or just become more familiar with the
circuit breaker, carefully lift and place the circuit breaker on a solid
work surface capable of handling the circuit breaker’s weight
(
) or on the captive drawout extension rails of the breaker
compartment (
) . This is accomplished by using the appropriate
lifting yoke and lifter . The lifting yoke consists of two steel hooks
specially shaped to hook under the integral molded lifting handles
on both sides of the circuit breaker (
) . Every effort should
be made during lifting to minimize circuit breaker swing and tilt .
If the circuit breaker is to be lifted onto compartment extension
rails, follow the instructions on
, “Installing the drawout
circuit breaker .”
