Siemens 3RV1431-4DA10 Motor Protection Circuit Breaker

Siemens 3RV1431-4DA10 is a SIRIUS motor protection circuit breaker (MPCB) in the S2 size, a three‑pole device designed for transformer protection and motor circuits in industrial control panels. It provides overload protection for 18–25 A (A‑release) and a short‑circuit release rated at 520 A (N‑release), with screw-terminal wiring for secure installation. The unit is rated for motors up to 25 HP (MRO) and integrates both overload and short‑circuit protection in a compact enclosure suitable for panel mounting. This model belongs to Siemens' 3RV family and is commonly used where reliable motor and transformer protection is required in industrial environments.