Allis-Chalmers BZO-138 Kit
A precision replacement kit for Allis-Chalmers BZO-138 oil circuit breakers (OCBs), machined to OEM dimensional specifications.
- OEMAllis-Chalmers
- Model / SeriesBZO-138
- Part typeKit
- EquipmentOil circuit breakers (OCBs)
- AvailabilityBuilt to order / lead time confirmed at quote
- Internal ref.BR-AC-BZO138-KIT
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.
About the Allis-Chalmers BZO-138 Oil Circuit Breaker
The Allis-Chalmers BZO-138 is an oil circuit breaker used in distribution substations for fault interruption and load switching. Its interrupter assembly includes an arcing nozzle, moving contact rod, push rod, spring, spring cap, and stationary contact in both 8-finger and 10-finger configurations. The interrupter components wear through interrupting duty and require replacement at the manufacturer's recommended overhaul interval. Southern Switch machines the complete interrupter kit and individual components for the BZO-138.
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
Lead time is confirmed at quote; 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.
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.
What’s in the kit
Every part below ships in the kit, listed with its OEM number and the quantity per kit. Need only certain parts or quantities? Tell us and we will tailor the quote.
| Ref | Part | Qty | Action |
|---|---|---|---|
| A | Arcing Nozzle OCBACBZ103 | 12 | |
| B | Spring OCBACBZ104 | - | |
| C | Spring Cap OCBACBZ105 | - | |
| D | Stationary Contact 8 Finger OCBACBZ106 | 48 | |
| E | Stationary Contact 10 Finger (OEM 71-211-653-004) OCBACBZ107 | 60 | |
| F | Moving Contact Rod (OEM 72-111-898-003) OCBACBZ100 | 6 | |
| G | Push Rod (OEM 72-211-472-001) OCBACBZ108 | 6 |
Worn but not scrap? Send us your used contacts. We recondition them to OEM dimension, or machine a new set from your sample, and return them tested and documented. Often cheaper and faster than buying new.
Send the model number, asset tag, or just a description, we’ll reply with pricing and lead time within one business day.
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