Moloney MA/MB Reversing & Transfer Switch Stationary Contact
A precision replacement stationary contact for Moloney MA/MB load tap changers (LTCs), machined to OEM dimensional specifications.
- OEMMoloney
- OEM part no.8489
- Model / SeriesMA/MB
- Part typeStationary contact
- EquipmentLoad tap changers (LTCs)
- AvailabilityBuilt to order / lead time confirmed at quote
- Internal ref.LTCMOMA003
Overview
Reversing & Transfer Switch Stationary Contact for the Moloney MA/MB load tap changer. 12 per kit. Machined to OEM spec.
About the Moloney MA/MB Load Tap Changer
The Moloney MA and MB are load tap changers produced by Moloney Electric and found in Moloney-nameplate transformers across Canadian and U.S. utility fleets. They use a transfer switch, selector switch, and reversing switch arrangement with bolted contact and lock-tab construction. The selector, transfer, and reversing switch contacts are the primary wear components at maintenance intervals. Southern Switch machines replacement contacts and kits for both the MA and MB configurations.
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.
Net 30 with an accepted PO, no credit application required. How we do business →