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Exploded view of the Allis-Chalmers BZO 138 Kit showing 7 labeled components — arcing nozzle, spring, spring cap and stationary contact 8 finger
Allis-Chalmers · BZO 138

Allis-Chalmers BZO 138 Kit

A precision replacement kit for Allis-Chalmers BZO 138 oil circuit breakers (OCBs), machined to OEM dimensional specifications. Material certification available on request.

  • OEMAllis-Chalmers
  • Model / SeriesBZO 138
  • Part typeKit
  • EquipmentOil circuit breakers (OCBs)
  • DocumentationMaterial certification on request
  • AvailabilityBuilt to order / short lead times
  • Internal ref.BR-AC-BZO138-KIT
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Overview

Contact kit for the Allis-Chalmers BZO 138 oil circuit breaker — arcing nozzle, spring, spring cap, 8- or 10-finger stationary contact, moving contact rod, push rod.

Why replace worn OCB contacts

Pitted or eroded oil-circuit-breaker contacts increase resistance and weaken interruption. Precision replacements restore dependable making and breaking under load.

Stock, lead time & reverse engineering

Common items are produced on short lead times; discontinued or hard-to-find parts are reverse-engineered from a sample, a drawing, or a model number. Based in Palm Harbor, FL, Southern Switch & Contacts manufactures and ships replacement parts to utilities nationwide, and has served the industry since 1982.

Parts in this kit (7)

Each part below corresponds to a labeled component on the kit drawing. Click View to open the part’s standalone page, or + Quote to add it to your quote without leaving this page.

RefPartQtyAction
AArcing Nozzle
OCBACBZ103
12
VIEW →
BSpring
OCBACBZ104
VIEW →
CSpring Cap
OCBACBZ105
VIEW →
DStationary Contact 8 Finger
OCBACBZ106
48
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EStationary Contact 10 Finger
OCBACBZ107
60
VIEW →
FMoving Contact Rod
OCBACBZ100
6
VIEW →
GPush Rod
OCBACBZ108
6
VIEW →
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