Moloney MA/MB Load Tap Changer Contacts
The Moloney MA/MB is a load tap changer found across the utility transformer fleet, and its switching contacts are the primary wear item. The original line is largely out of production, so replacements come from a shop that still makes them. Southern Switch machines and reverse-engineers the full Moloney MA/MB contact set in-house in Palm Harbor, Florida, to the original dimensional specification, including complete contact kits, transfer switch contacts, selector switch contacts, reversing switch contacts, arcing contacts. Refurbish your worn contacts or order OEM-spec replacements; lead time is confirmed at quote and material certifications are available.
MA/MB contacts and kits.
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
LTC contact · machined or refurbished in-house
Refurbished, reverse-engineered, or new.
Send us your worn MA/MB contacts and we refurbish them where the base material is sound. Where it is not, we machine new OEM-spec replacements, and where the OEM part is long gone we reverse-engineer it from a sample, a drawing, or a model number. That is the difference from a catalog seller: we are the shop making the part. Full LTC rebuild service is available when the whole tap changer needs work.
Maintenance and background.
Moloney MA/MB questions.
Are Moloney MA/MB LTC contacts still available?
Yes. The original Moloney line is largely out of production, so replacements come from a shop that still makes them. Southern Switch machines and, where the part is obsolete, reverse-engineers the full Moloney MA/MB contact set in-house in Palm Harbor, FL, to the original dimensional specification.
Can you refurbish my existing MA/MB contacts, or only supply new?
Both. We refurbish customer-supplied Moloney MA/MB contacts where the base material is sound, and machine new OEM-spec replacements where it is not. Material certifications are available on request.
How fast can you supply MA/MB contacts?
Lead time is confirmed at quote and depends on current material availability. In-stock items ship quickly; reverse-engineered first runs take longer.
Tell us which MA/MB contacts you need, or send a sample. We respond within one business day with availability, a price, and a lead time.