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User Instructions UM582127000
Spec. No. 582127000 (Model 721NPBB) Issue AC, January 2, 2013
Chapter 4. Troubleshooting and Repair Page 59
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Figure 4-20
Replacing a Load Disconnect Contactor
in a 1-Row Distribution Cabinet
Load
Disconnect
Contactor
Components removed in
illustration for clarity only.
Front
5/16-18 x 1” Bolt
5/16" Belleville Lock Washer
5/16" Belleville Lock Washer
(concave side of Belleville
Lock Washers face each other)
5/16" Hardened Flat Washer
(4 places)
Torque to 100 in-lbs.
Apply electrical anti-oxidizing
compound to busbar
mating surfaces.
Contactor styles vary
between manufacturer’s.
Black Wire
Violet/White Wire
Violet Wire
Red Wire
Violet/White Wire
Violet Wire
Black Wire
Red Wire