Waukesha UZD Kit

Overview

Contact kit for the Waukesha UZD LTC, main stationary and moving contacts, reversing moving and stationary, drive shaft, current collector assembly, roller arcing, and bushing.

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 supplies 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

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.