Siemens SIRIUS 3RH2911-2HA31 Auxiliary Contact Block 3NO+1NC Screw Terminal Front Mounting

The Siemens SIRIUS 3RH2911-2HA31 auxiliary contact block is a high-quality switching device designed for use with Siemens SIRIUS 3RH2 and 3RT2 contactors. It provides reliable signal and control functions in industrial automation systems. With a contact configuration of 3 normally open (NO) and 1 normally closed (NC), this block offers flexibility for various control circuits. The front mounting design and screw terminals ensure easy installation and secure connections.

Advantages

This auxiliary contact block delivers exceptional durability with an electrical endurance of 10 million switching cycles and a mechanical endurance of 30 million switching cycles. It operates reliably in a wide temperature range from -25 to +60 °C, making it suitable for demanding industrial environments. The IP40 front protection and IP20 terminal protection safeguard against dust and accidental contact.

Suitable for

• Industrial control panels
• Motor control centers
• Automation systems
• Switching and signaling applications

Key specifications

• Contact configuration: 3 NO + 1 NC
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Operating current AC-15 (230 V): 6 A
• Operating current AC-15 (400 V): 3 A
• Operating current DC-13 (24 V): 10 A
• Operating current DC-13 (125 V): 0.5 A
• Mounting: Front mounting
• Terminal type: Screw terminals
• Compatibility: Siemens SIRIUS 3RH2 and 3RT2 contactors
• Degree of protection: IP40 (front), IP20 (terminals)
• Ambient temperature: -25 to +60 °C
• Electrical endurance: 10 million switching cycles
• Mechanical endurance: 30 million switching cycles

Recommendations

For optimal performance, use this auxiliary contact block with Siemens SIRIUS contactors. Ensure proper tightening torque for screw terminals and follow installation guidelines. This product is a reliable choice for extending the functionality of your control system.