Westinghouse UTTB Arcing Moving Contact
A precision replacement arcing moving contact for Westinghouse UTTB load tap changers (LTCs), machined to OEM dimensional specifications.
- OEMWestinghouse
- OEM part no.475C858 G01
- Model / SeriesUTTB
- Part typeArcing moving contact
- EquipmentLoad tap changers (LTCs)
- AvailabilityBuilt to order / lead time confirmed at quote
Overview
Arcing moving contact for the Westinghouse UTTB load tap changer. 6 per kit. Machined to OEM specification or reverse-engineered when the part is discontinued.
About the Westinghouse UTTB
The Westinghouse UTTB is an updated variant of the UTT with a revised arcing contact design that separates the arcing duty from the main current-carrying contacts. The arcing moving and stationary contacts absorb the switching arc on each tap change, protecting the main contacts from direct erosion. When the arcing contacts wear down, arc interruption becomes unreliable, raising the risk of restrikes and damage to the main transfer switch contacts. Southern Switch supplies new and refurbished arcing contacts for the UTTB alongside the full range of selector, reversing, transfer switch, and collector ring contacts.
Why replace worn LTC contacts
Worn or burned tap-changer contacts raise resistance, run hot, and can lead to tap-changer failure. Precision replacements restore reliable switching and extend the service life of the LTC.
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.
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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