Siemens SIRIUS 3RH29 Auxiliary Contact Block, 1 NO, Screw Terminal, Front Mounting, 3RH2911-2HA10

The Siemens SIRIUS 3RH29 auxiliary contact block, model 3RH2911-2HA10, is a high-quality switching device designed for use with SIRIUS 3RT2 contactors and 3RH2 contactor relays. This front-mounted block features one normally open (NO) contact and screw terminal connections, ensuring reliable and secure wiring. With a rated insulation voltage of 690 V and impulse withstand voltage of 6 kV, it is suitable for industrial control applications. The compact design and IP20 protection make it ideal for installation in control cabinets.

Advantages

Reliable switching performance with electrical durability of 10 million cycles and mechanical durability of 30 million cycles. Easy front mounting saves space and simplifies installation. Screw terminals provide secure and maintenance-friendly connections. Wide operating temperature range from -25 to +60 °C ensures operation in demanding environments.

Suitable for

• Industrial automation and control systems
• Motor control centers
• Switchgear and distribution boards
• Machine building and plant engineering

Key specifications

• Product Type: Auxiliary Contact Block
• Mounting Type: Front Mounting
• Contact Configuration: 1 NO
• Connection Type: Screw Terminal
• Rated Insulation Voltage (Ui): 690 V
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Rated Operational Current (AC-15, 230V): 6 A
• Rated Operational Current (DC-13, 24V): 10 A
• Degree of Protection (IP): IP20
• Operating Temperature Range: -25 to +60 °C
• Storage Temperature Range: -55 to +80 °C
• Electrical Durability: 10 million switching cycles
• Mechanical Durability: 30 million switching cycles
• Standards: IEC 60947-5-1, EN 60947-5-1
• Series: SIRIUS 3RH29

Recommendations

For optimal performance, pair this auxiliary contact block with Siemens SIRIUS 3RT2 contactors or 3RH2 contactor relays. Ensure proper torque settings for screw terminals as per installation manual.