Siemens SIRIUS 3RH2911-2HA11 Auxiliary Contact Block, 1 NO + 1 NC, Screw Terminal, Side Mount

The Siemens SIRIUS 3RH2911-2HA11 auxiliary contact block is a high-quality switching device designed for lateral mounting on SIRIUS 3RT2 contactors. It provides one normally open (NO) and one normally closed (NC) contact, enabling expanded control and signaling functions in industrial automation systems. With robust screw terminals and a compact design, this block ensures reliable performance in demanding environments.

Advantages

• Reliable switching with 1 NO + 1 NC contact configuration
• Easy side mounting on SIRIUS 3RT2 contactors
• Screw terminals for secure and simple wiring
• High electrical and mechanical durability
• Wide operating temperature range from -25 to +60 °C

Suitable for

• Industrial control panels
• Motor control centers
• Automation systems requiring auxiliary contacts
• Signaling and interlocking circuits

Key specifications

• Contact configuration: 1 NO + 1 NC
• Mounting type: Lateral (side-mounted)
• Compatibility: Siemens SIRIUS 3RT2 contactors
• Terminal type: Screw terminals
• Rated insulation voltage (Ui): 690 V AC/DC
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational current (AC-15, 230 V): 6 A
• Rated operational current (DC-13, 24 V): 10 A
• Degree of protection (IP): IP20 (front side)
• Operating temperature: -25 to +60 °C
• Electrical durability: 10 million switching cycles (AC-15, 230 V, 6 A)
• Mechanical durability: 30 million switching cycles
• Short-circuit protection (fuse gG): 10 A
• Pollution degree: 3
• Conductor cross-section (solid): 0.5 ... 4 mm²
• Conductor cross-section (stranded): 0.5 ... 2.5 mm²
• Tightening torque: 0.8 ... 1.2 Nm
• Product series: SIRIUS

Recommendations

For optimal performance, use with Siemens SIRIUS 3RT2 contactors and ensure proper tightening torque. Suitable for industrial environments where reliable auxiliary contacts are required.