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Exploded view of the General Electric FK339 Kit showing 4 labeled components, intermediate contact, upper contact assembly and moving contact rod
General Electric · FK339

General Electric FK339 Kit

A precision replacement kit for General Electric FK339 oil circuit breakers (OCBs), machined to OEM dimensional specifications. Material certification available on request.

  • OEMGeneral Electric
  • Model / SeriesFK339
  • Part typeKit
  • EquipmentOil circuit breakers (OCBs)
  • DocumentationMaterial certification on request
  • AvailabilityBuilt to order / short lead times
  • Internal ref.BR-GE-FK339-KIT
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Overview

Contact kit for the GE FK339 oil circuit breaker, intermediate contacts (two styles), upper contact assembly, moving contact rod.

About the GE FK339 Oil Circuit Breaker

The General Electric FK339 is an oil circuit breaker variant in the FK series used in distribution and subtransmission substations. It uses an intermediate contact assembly with style A and style B configurations, a moving contact rod, and an upper contact assembly to interrupt fault current in oil. The intermediate contact, moving contact rod, and upper contact assembly are the scheduled replacement items at overhaul. Southern Switch machines FK339 components to OEM dimensional specifications and stocks the complete kit.

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 (4)

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
AIntermediate Contact (Style A)
OCBGEFK300A
6
VIEW →
BIntermediate Contact (Style B)
OCBGEFK300B
6
VIEW →
CUpper Contact Assembly
OCBGEFK303
6
VIEW →
DMoving Contact Rod
OCBGEFK302
24
VIEW →
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