Siemens 3RV1031-4DB10 Three-Phase AC Contactor

Siemens 3RV1031-4DB10 is a three‑pole motor protection circuit breaker (MPCB) in the S2 size, designed to protect motors in low‑voltage industrial power systems up to 690 V. It combines thermal overload protection with magnetic short‑circuit release, featuring an adjustable A‑release for 18–25 A and a fixed N‑release rated at 325 A, with screw‑terminal connections for secure wiring and a standard breaking capacity. The compact device offers front IP20 protection, supports operation from −20 to +60 °C, and is suitable for panel‑mount installations in environments up to 2,000 m above sea level. As a phased‑out Siemens product, it lists 3RV2031‑4DB10 as its direct successor in the SIRIUS 3RV2 family, is manufactured in Germany, RoHS‑compliant, and has a net weight of 1.071 kg, with catalog data reflecting motor‑protection applications and screw‑type terminals.