R250GP Alternative Leroy-Somer Automatic Voltage Regulator

The R250GP Alternative Leroy-Somer Automatic Voltage Regulator (part R250GP) controls the alternator's excitation so the output voltage stays steady as the load changes.

About this part

Sensitive loads such as computers, inverters and motor drives depend on a steady voltage. The regulator is a small, inexpensive board that protects everything downstream of the generator.

Features

Storage temperature of -55 degrees Celsius to 85 degrees Celsius
Operating temperature of -40 degrees Celsius to 70 degrees Celsius
Rapid response time for voltage variation
Power supply protection by 8 amp fuse

When to replace it

Output voltage that is too high, too low or unstable
No output voltage although the engine runs normally
Lights flickering or voltage dipping as loads switch on
A burnt or damaged board after a lightning strike or short

Before you order

Match the AVR to the alternator: sensing (single or three phase), excitation type (brushless or brush type), supply voltage and the physical mounting all have to suit. Note the wiring before disconnecting the old regulator.

If the old part has no readable number, send us a clear photo with the engine or alternator nameplate and we will identify it before you buy.

Questions

Will a universal AVR work on my alternator?

Often, if the sensing, excitation current and supply voltage suit. Send us the alternator make and model and the old AVR number and we will confirm.

What is an "alternative" AVR?

A regulator made to replace the original part on a specific alternator brand, at a lower cost than the brand part.

Part number	R250GP
Brand	Alternative Leroy-Somer
Range	Automatic Voltage Regulators (AVRs)

Part number

R250GP

Brand

Alternative Leroy-Somer

Range

Automatic Voltage Regulators (AVRs)