Siemens 3RH2911-1XA31-0MA0 Auxiliary Switch Block, 3NO+1NC, Front Mount, Screw Terminals

Auxiliary switch block for SIRIUS 3RT2 contactors, providing 3 normally open and 1 normally closed contacts with front mounting and screw terminals for reliable control circuit integration.

Advantages

Expands contactor functionality with four auxiliary contacts, enabling status signaling and interlocking. Front mounting allows quick installation without removing the main contactor. Screw terminals ensure secure, vibration-resistant connections.

Suitable for

• SIRIUS 3RT2 contactors, sizes S00 and S0
• Control circuits requiring multiple auxiliary contacts
• Industrial automation and motor control applications

Key specifications

• Contact configuration: 3 NO + 1 NC
• Number of poles: 4
• Mounting type: front mounting
• Terminal type: screw terminals
• Rated insulation voltage (Ui): 690 V AC
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operating current (AC-15): 6 A at 230 V, 3 A at 400 V
• Rated operating current (DC-13): 1 A at 24 V
• Degree of protection: IP20
• Operating temperature range: -25 to +60 °C
• Electrical endurance: 10,000,000 switching cycles
• Mechanical endurance: 30,000,000 switching cycles
• Connection cross-section: 0.5 - 2.5 mm² (solid and stranded)
• Tightening torque: 0.8 - 1.2 Nm

Recommendations

Verify contactor compatibility before ordering. Ensure proper torque when tightening screws to maintain reliable connections.