Siemens 5ST3030 Shunt Release 110-415V AC/DC 2NO SENTRON

The Siemens 5ST3030 (MLFB: 5ST3030) is a SENTRON shunt release designed to remotely trip miniature circuit breakers and residual current devices. It operates across a wide supply voltage range of 110-415 V AC or 110-220 V DC and includes 2 normally open (NO) contacts. Compatible with the 5SL4, 5SY, 5SP MCB families, the 5SU1 RCBO, and the 5SV RCD series (5SU1 requires handle coupler 5ST3805-1).

Technical specifications:

• MLFB: 5ST3030
• Manufacturer: Siemens
• Product line: SENTRON
• Product type: Shunt release (shunt trip)
• Operating voltage AC: 110-415 V
• Operating voltage DC: 110-220 V
• Rated voltage AC: 230 V
• Operational current at DC: 0.05 A
• Control voltage type: AC/DC
• NO contacts: 2
• NC contacts: 0
• Electrical endurance: 10,000 operating cycles (typical)
• Mounting: Universal (mountable accessory, not factory mounted)
• IP rating: IP20
• Conductor cross-section: 0.5-2.5 mm²
• AWG range: 24-12
• Max tightening torque: 0.8 Nm
• Dimensions (WxHxD): 18 x 90 x 70 mm
• Modular width: 1 module (18 mm)
• Net weight: 98 g
• Operating temperature: -25°C to +55°C
• Storage temperature: from -40°C
• Standard: IEC/EN 60947-1

Features and benefits:

• Wide voltage range (110-415 V AC / 110-220 V DC) allows use across diverse supply systems
• Compatible with multiple Siemens MCB, RCBO, and RCD families for flexible integration
• 2 NO signal contacts provide feedback or interlocking in control circuits
• Compact 1-module (18 mm) DIN rail design minimises panel space
• Rated for 10,000 operating cycles for reliable long-term service
• Railway approval and general product approval for specialist applications

Applications:

• Remote tripping of MCBs (5SL4, 5SY, 5SP) in distribution boards via external control signals
• Emergency shutdown circuits requiring electrical trip activation from a remote location
• Integration with building management or fire alarm systems to open circuits automatically
• Interlocking and signalling within industrial and commercial switchgear panels
• Railway and special-environment installations where certified accessories are required

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

Also known as: Siemens 5ST3030, Siemens SENTRON shunt trip release, Siemens MCB remote trip accessory.