Littelfuse MPU-32-04-00 is a versatile relay system offering fail-safe/non-fail-safe operation and conformal coating. With 3 Form C relay contacts and a wide range of IEEE device numbers, it provides reliable protection. Features include front-panel/reset switch, harmonic filtering, digital inputs, and various communication options. AC/DC voltage supply, adjustable GF trip levels, and support for up to 25 temp sensors ensure flexibility. Analog output, ranging from 4-20mA, assists in monitoring critical processes.