The SP Powerworld EA08A Compatible Automatic Voltage Regulator is a direct replacement for the Genuine Leroy Somer R438.
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 and is Compatible with the RS128 A & R238 models.