Siemens 3RH2122-2BB40 SIRIUS 24V DC Contactor Relay with Spring-Loaded Terminal

The 3RH2122-2BB40 is a compact SIRIUS contactor relay designed for auxiliary switching in industrial applications. Equipped with a 24 V DC coil and four contact points (2 NO + 2 NC), it provides reliable control in automation systems. The S00 configuration in size and the spring-loaded terminal design allow for easy mounting on DIN rail or screw mounting. With high insulation capability (690 V AC, surge resistance up to 6 kV), mechanical service life of up to 30 million switching cycles, and an ambient temperature range of 25 °C to +60 °C, this relay offers consistent performance under demanding conditions. It is ideal for safety-related applications, has a positively driven operation according to IEC 60947-5-1, and provides reliable auxiliary control.

Technical Details:

Brand: Siemens
Model Number: 3RH2122-2BB40
Coil Type: 24 V DC Control Voltage
Coil Power: 4 W (both pick-up and hold)
Contacts: 2 NO + 2 NC (direct)
Insulation / Surge Resistance: 690 V AC
Switching Frequencies (No-Load): AC/DC up to 10,000 Operations/Hour
Mounting & Connection: DIN Rail or Screw Mounting
Condition: Comparable to Images

Note:

For detailed technical data and processing instructions, we strongly recommend consulting the original data sheets or contacting the manufacturer directly.

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