Siemens SIRIUS 3RV2 Auxiliary Contact Block 3RV2901-1F, 1NO+1NC, Screw Terminal, Transverse Mounting

The Siemens 3RV2901-1F is a high-quality auxiliary contact block from the SIRIUS 3RV2 series, designed for transverse (lateral) mounting on Siemens 3RV2 motor starters and circuit breakers. This contact block provides one normally open (NO) and one normally closed (NC) contact, offering reliable signaling and control functions in industrial automation applications. With a rated insulation voltage of 690 V and impulse withstand voltage of 6 kV, it ensures safe operation in demanding environments. The screw terminals accommodate solid conductors up to 4 mm² and stranded conductors up to 2.5 mm², providing secure and easy wiring. The front face offers IP40 protection, while terminals are IP20 rated. Operating temperature range is -20 to +60 °C, with electrical endurance of 10 million switching cycles and mechanical endurance of 30 million cycles, guaranteeing long service life.

Advantages

Compact design saves space in control cabinets. High switching reliability ensures consistent performance. Easy transverse mounting simplifies installation. Robust construction withstands harsh industrial conditions. Versatile compatibility with SIRIUS 3RV2 series devices.

Suitable for

• Industrial motor control centers
• Automation systems requiring auxiliary contacts
• Signaling and interlocking circuits
• Remote monitoring and control applications

Key specifications

• Contact configuration: 1 NO + 1 NC
• Mounting: Transverse (lateral)
• Rated insulation voltage (Ui): 690 V
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational current AC-15 (230 V): 6 A
• Rated operational current DC-13 (24 V): 1 A
• Degree of protection: IP40 (front), IP20 (terminals)
• Ambient temperature: -20 to +60 °C
• Electrical endurance: 10 million switching cycles
• Mechanical endurance: 30 million switching cycles
• Terminal type: Screw terminals
• Conductor cross-section solid: 0.5 - 4 mm²
• Conductor cross-section stranded: 0.5 - 2.5 mm²

Recommendations

For optimal performance, use with Siemens SIRIUS 3RV2 motor starters and circuit breakers. Ensure proper torque settings for screw terminals as per manufacturer guidelines. Suitable for use in industrial environments with moderate dust and moisture.