1
Instruction Booklet
IB 52-01-TE
Effective October 2010
Instructions for the Eaton Type CM52
Network Protectors 800 to 4500 Amperes
EATON COrPOrATION www.eaton.com
1 IB -52-01-TE
Effective 11/05/08 (super cedes 11/19/03) IB 52-01-TE
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SECTION I - RECEIVING, HANDLING, AND STORING
1.1 RECEIVING
Each unit shipped comprises a housing
containing a draw out unit which may h ave
externally mounted fuse housing, which are
equipped with Type NPL fuses, and are supplied
with spade terminals or threaded studs.
The type MPC series solid-state n etwork
protector rel ay is supplied with the CM52
network protector mounted on the relay pan el.
For use of the MPC series relay, please refer to
relay I.B.
When receiving new n etwork prot ectors, make a
general inspection looking particularly for
damage, which may h ave occu rred in handling
and shipping. If any dam age is apparent, file a
claim within 24 hours. If the unit is to be placed
in storage for more than a few weeks it should be
inspected and tested thoroughly and any
deficien cies report ed.
1.2 HANDLING
1.2.1
Lifting of Breaker
To facilitate lifting, two lifting brackets are
supplied and mounted inside the door of each
enclosure. These brackets can only be attached
once the break er has b een complet ely withdrawn
on its extension rails.
1.2.2
Lifting the Enclosure
A SPREADER MUST BE USED TO ENSURE
THAT NO DAMAGE OCCURS. (see figu re
2A)
Two lifting holes, 1-3/8 inch diamet er, are
located near the top at each side o f the enclosure.
Spreaders must be used on chains or slings to
prevent damag e to the fuse housings.
For shipping, network protectors are mounted on
wooden skids designed for use with forkli ft
trucks. Insert fork at the rear o f unit and tilt unit
slightly toward truck before li fting.
1.3 STORING
Submersible units may be stored as received
with door tightly closed and with the shipping
cover over the throat opening.
NOTE: Units should be transported and stored in upright
position only .
Lifting Brac kets
Fig. 2
Lifting the CM52 Breaker
Fig. 2A
Lifting the CM52 enclosure
