Waukesha UZD Main Moving Contact Assembly

A precision replacement moving contact assembly for Waukesha UZD load tap changers (LTCs), machined to OEM dimensional specifications. Material certification available on request.

OEMWaukesha

Model / SeriesUZD

Part typeMoving contact assembly

EquipmentLoad tap changers (LTCs)

DocumentationMaterial certification on request

AvailabilityBuilt to order / short lead times

Internal ref.LTCASUZ004

Overview

Main Moving Contact Assembly for the Waukesha UZD load tap changer. 3 per kit. Machined to OEM spec.

About the Waukesha UZD Load Tap Changer

The Waukesha UZD is a diverter-switch type load tap changer produced by Waukesha Electric Systems and found in Waukesha and SPX transformer nameplate units across utility distribution and power transformer fleets. Its selector switch, reversing switch, roller arcing contact, drive shaft, and current collector assembly work together to pre-select and execute each tap change under load. The roller arcing contact is the component most subject to erosion from interrupting duty. When the roller surface wears, arc interruption becomes inconsistent and overheating at the contact interface can progress to diverter switch failure. Southern Switch stocks the full range of UZD contacts, drive shafts, and current collector components.

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

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.