Siemens Sirius Innovation 3RH2 Contactor, 2NO+2NC, 600VDC, 690VAC, 10A Part number 3RH2122-1BM40

Product Overview

The Siemens SIRIUS auxiliary contactor (SKU: 3RH2122-1BM40) is a 4-pole control relay in size S00, featuring 2 normally-open and 2 normally-closed contacts, designed for a 220 V DC coil. It offers reliable performance in control applications, enabling compact and modular switching.

Key Features

• 2 NO + 2 NC auxiliary contacts
• Size: S00 (compact frame)
• Coil rated for 220 V DC operation
• Screw-terminal connection for the main and auxiliary circuits
• Insulation voltage rating: 690 V (degree of pollution 3)
• Surge voltage resistance: 6 kV

Technical Specifications

• Product Type: Auxiliary contactor (SIRIUS 3RH2 series)
• Article Number: 3RH2122-1BM40
• Size: S00
• Auxiliary Contacts: 2 NO + 2 NC
• Rated Coil Voltage: 220 V DC
• Insulation Voltage (U_i): 690 V
• Surge Voltage Withstand (U_imp): 6 kV
• Mechanical Service Life (typ.): 30 000 000 operations
• Ambient Operating Temperature: –25 °C to +60 °C
• Storage Temperature: –55 °C to +80 °C
• Installation Altitude Max.: 2 000 m above sea level
• Protection Class (front): IP20

Compliance & Certifications

• Complies with IEC/EN standards for contactor relays
• CE-marked & RoHS compliant

Applications

Ideal for use in industrial control panels and switchgear where compact auxiliary switching is needed. The 3RH2122-1BM40 excels in demanding control applications that require reliable contact operation, compact size, and long service life.