Siemens Auxiliary Switch 3RV2901-1D Transverse Mounting (3RV29011D)

With a rated insulation voltage of 690 V AC and an electrical endurance of 10 million switching cycles, this Siemens auxiliary switch block is engineered for reliable performance in demanding motor starter applications.

Overview

The Siemens 3RV2901-1D auxiliary switch is a transverse-mounting accessory designed for seamless integration with Siemens SIRIUS 3RV2 motor starters. It provides one normally open (NO) and one normally closed (NC) contact, enabling versatile control and signalling functions. Screw terminals ensure secure and maintenance-free connections.

What stands out

• Transverse mounting saves space in control panels
• High electrical endurance: 10 million switching cycles
• Mechanical endurance: 30 million switching cycles
• Wide operating temperature range: -25 to +60 °C
• Rated impulse withstand voltage: 6 kV

Technical details

• Contact configuration: 1 NO + 1 NC
• Rated operational current (AC-15, 230 V): 6 A
• Rated operational current (DC-13, 220 V): 0.3 A
• Rated insulation voltage (Ui): 690 V AC
• Degree of protection: IP40 (front), IP20 (terminals)
• Terminal cross-section: 0.5–4 mm² (solid), 0.5–2.5 mm² (stranded)
• Tightening torque: 0.8–1.2 Nm

Our verdict

A robust and reliable auxiliary contact block that extends the functionality of Siemens motor starters with minimal wiring effort.