Siemens pomocný spínací blok 3RH2911-2XA40-0MA0, 4-pólový, 2NO+2NC

When a contactor alone cannot handle all control and signalling tasks, this auxiliary switch block extends the functionality of Siemens SIRIUS 3RH2 contactor relays. It adds four auxiliary contacts (2 normally open, 2 normally closed) to provide reliable status feedback and interlocking in industrial control circuits.

Who is it for

Electrical engineers and panel builders who use Siemens SIRIUS 3RH2 contactor relays and need additional auxiliary contacts for control logic, signalling, or safety interlocks. This block is ideal for retrofitting existing installations or building new control panels with standardized components.

Main features

• 4-pole auxiliary switch block with 2NO+2NC contact configuration
• Designed for side mounting on Siemens SIRIUS 3RH2 contactor relays
• Compact design conserves space in control cabinets
• Screw terminals for secure and maintenance-friendly wiring
• High mechanical and electrical endurance for demanding industrial environments

Specifications

• Brand: Siemens
• Model: 3RH2911-2XA40-0MA0
• MPN: 3RH29112XA400MA0
• EAN: 4011209892781
• Contact configuration: 2NO + 2NC
• Mounting: Side mounting on 3RH2 contactor relay
• Connection type: Screw terminals

Tips

Ensure compatibility with your existing Siemens SIRIUS 3RH2 contactor relay before ordering. Mount the block securely according to Siemens installation guidelines to maintain reliable contact operation.