Siemens 5ST3010 SENTRON Auxiliary Current Switch

Siemens 5ST3010 SENTRON auxiliary current switch provides a second signaling path for SENTRON miniature circuit breakers (5SL, 5SY, 5SP) by adding one normally open (NO) and one normally closed (NC) contact. It mounts as an accessory with the breaker’s integrated switch (5TL1) and is compatible with RCBO 5SU1 (without 5SU1 FP/FR) and RCCB 5SV; when using 5SU1, a handle coupler 5ST3805-1 is required. The device features a DC-rated operating current of 0.01 A and a compact form factor (approximately 90 mm high, 9 mm wide, 70 mm deep) with a net weight around 0.05 kg, insulation voltage 440 V, and IP20 protection, conforming to IEC/EN 60947-5-1. It is designed for distribution boards needing status signaling of the protected circuit and is part of the SENTRON accessory ecosystem.