Siemens 5ST3010 Auxiliary Switch 1NO+1NC 440V SENTRON

The Siemens 5ST3010 is a SENTRON auxiliary switch with a 1 NO + 1 NC contact arrangement, designed for side-mounting on SENTRON miniature circuit breakers and compatible switching devices. It fits 5SL, 5SY, and 5SP miniature circuit breakers, incorporated switch 5TL1, RCBO 5SU1 (excluding 5SU1...FP/FR), and RCCB 5SV series, enabling position signalling and control interlocking in low-voltage distribution. The unit occupies a single 9 mm module and accepts AC/DC control voltages from 12 V to 400 V.

Technical specifications:

• MLFB: 5ST3010
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Auxiliary switch, mountable (not factory pre-assembled)
• Contact arrangement: 1 NO + 1 NC
• Insulation voltage: 440 V
• Surge voltage resistance: 4 kV
• Operating voltage: 400 V AC/DC (min 12 V)
• Control voltage: AC/DC
• Operational current (DC): min 0.01 A
• IP rating: IP20
• Electrical endurance: 10,000 operating cycles (typical)
• Conductor cross-section: 0.5-2.5 mm² (AWG 24-12)
• Tightening torque: max 0.5 N·m
• Dimensions (W x H x D): 9 x 90 x 70 mm
• Modular width: 1 module
• Weight: 49.7 g
• Operating temperature: -25°C to +55°C
• Storage temperature: min -40°C
• Standards: IEC/EN 60947-5-1; IEC/EN 62019

Features and benefits:

• Universal side-mounting - not factory pre-assembled, fits either side of the host device
• Wide device compatibility: 5SL, 5SY, 5SP MCBs, 5TL1 incorporated switch, 5SU1 RCBO, and 5SV RCCB
• AC/DC control voltage range from 12 V to 400 V suits diverse control circuit designs
• Compact single-module (9 mm) footprint minimises DIN rail space
• Rated for 10,000 electrical operating cycles
• Approved for maritime and railway applications

Applications:

• Signalling breaker open or closed position in residential and commercial distribution boards
• Control interlocking within low-voltage switchgear assemblies
• Remote monitoring circuits for SENTRON MCB and RCBO installations
• Status indication wiring in industrial panel builds requiring RCCB position feedback

Compliant with IEC/EN 60947-5-1 and IEC/EN 62019. Part of the Siemens SENTRON range.

Also known as: Siemens 5ST3010, SENTRON auxiliary switch, MCB auxiliary contact 1NO 1NC.