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Do you need to add some regulators to your system or looking to replace a couple?  

B&B sells and services all brands of voltage regulators.


Did you know that the internal components of a voltage regulator haven't changed in over 30 years? B&B has many ways to help get you a better product at a better price. 


B & B Transformer is one of the leading regulator maintenance facilities for cooperatives in Minnesota and Wisconsin. We offer one of the best warranty in the business.


We sell many brands and sizes of voltage regulators

Update or retro fit new control panels to any regulator

We sell many brands and models of regulator control panels

Fix any regulator control panel

Make longer control cables

Add neutral light indicator





Complete testing and evaluation of all windings and motors

Regulator run through all of its steps


Visual and physical check of all contacts and components

Complete wash down of coils and tank


Polish all contacts

Change gaskets

All internal connections and components get torque tested


40 gallons of new oil (Some units require more oil)


Cleaning of position indicator and related components


Replacement of capacitors and mount externally


Sand and paint exterior of the regulator

Stencil voltage and amps on exterior (we can add any information you like)


Sand and paint inside and outside of Terminal Box cover

Pick up and delivery - B&B Transformer has a very short turn around time on our maintenance program. 


B & B Transformer buys used and junk regulators. 

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