The SP Powerworld EA08A Compatible Voltage Regulator is direct replacement for Genuine Leroy Somer R438 - it can also replace the following models:
Leroy Somer: R438 REV2 - R438REVB 2 - RS437 - AEM110RE017 - AEM110RE003 - SDMO: 330410127 - 330410164 - 330410334 - FG Wilson: 922-045 - 922-045.
Accepted worldwide as the only Quality and Legal aftermarket replacement. It's been designed to work in exactly the same way and operates at the same performance. It’s the same size, function and has the same wiring connections, it also comes with 12 months warranty.