Westinghouse LTC Replacement Parts
Westinghouse LTCs are reactance-type (preventive-autotransformer) designs and they have proven exceptionally durable. Many URT and UTT-series units installed in the 1950s and 60s are still in service with periodic contact refurbishment.
The URT high-amp and low-amp variants share most stationary contacts but differ in the moving-contact assemblies. The UTT and UTTA are mechanically similar and share many SKUs, with the UTTA being the slightly later revision. The UTTB introduced a redesigned reversing-switch arrangement. The UVT-2000 is the highest-amperage Westinghouse LTC and uses heavier-section moving contacts throughout.
Because the Westinghouse LTC business was acquired by Eaton (and earlier by ABB), original-brand parts support is limited. Reverse-engineered contacts machined from original Westinghouse drawings are the standard path to keeping these LTCs in service.
Reactance-type LTCs spend more time with both arcing contacts bridging adjacent taps. That means more thermal cycling of the contact face, but less violent arc erosion per operation. The wear pattern is gradual silver depletion across the contact face rather than localized pitting at the arc-strike point. Replacement intervals run 100k to 200k operations because of this slower wear mode.
Kit · LTC Contacts
Kit · LTC Contacts
Kit · LTC Contacts
Kit · LTC Contacts
Kit · LTC Contacts
We refurbish and reverse-engineer parts for every Westinghouse LTC ever built. Send us a model number or photo and we’ll quote within one business day.