Siemens 3RH2911-1HA13 Auxiliary Contact Block 1NO+3NC for SIRIUS 3RT2/3RH2

The Siemens 3RH2911-1HA13 is a high-quality auxiliary contact block designed for use with SIRIUS 3RT2 contactors and 3RH2 control relays. This front-mounted block features 1 normally open (NO) and 3 normally closed (NC) contacts, providing reliable switching and signaling in industrial automation applications. With screw terminals and robust construction, it ensures secure connections and long service life.

Advantages

This auxiliary contact block offers exceptional durability with 10 million electrical and 30 million mechanical switching cycles. Its compact design allows for easy front mounting, saving space in control cabinets. The screw terminals accommodate solid or stranded wires from 0.5 to 2.5 mm², simplifying installation. Compliance with IEC 60947-5-1 and EN 60947-5-1 standards guarantees performance and safety.

Suitable for

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

Key specifications

• Contact configuration: 1 NO + 3 NC
• Rated insulation voltage (Ui): 690 V AC
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational current (AC-15, 230V): 6 A
• Rated operational current (AC-15, 400V): 3 A
• Rated operational current (DC-13, 24V): 10 A
• Rated operational current (DC-13, 125V): 0.55 A
• Degree of protection: IP40 front, IP20 terminals
• Ambient operating temperature: -25 to +60 °C
• Pollution degree: 3
• Connection cross-section: 0.5 - 2.5 mm² (solid/stranded)

Recommendations

For optimal performance, use with Siemens SIRIUS 3RT2 contactors or 3RH2 control relays. Ensure proper mounting and torque settings as per manufacturer guidelines.