3RH2122-2BB40
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$33.17
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Buy genuine Siemens 3RH2122-2BB40 online
The Siemens 3RH2122-2BB40 SIRIUS contactor relay is a reliable and industrial-grade auxiliary contactor designed for demanding automation applications. Featuring a compact size and robust construction, this contactor relay has 2 normally open (NO) and 2 normally closed (NC) contacts, supporting 24 V DC coil operation. Its spring-loaded terminals ensure secure wiring and enhanced electrical performance, making it a preferred choice in factory control panels and machine automation. Built with quality and certified to international standards such as IEC 60947, this contactor relay delivers excellent contact stability at low voltages and currents. The Siemens 3RH2122-2BB40 is engineered for high switching reliability and mechanical endurance, contributing to streamlined and safe operations in various industrial environments, ensuring long service life and compliance with safety regulations.
Key Features of Siemens 3RH2122-2BB40
- 2 NO + 2 NC auxiliary contact configuration (2 Form C contacts)
- 24 V DC coil voltage with spring-loaded terminals for easy installation
- Compact frame size S00 measuring 70 mm (H) x 45 mm (W) x 73 mm (D)
- Contact rating up to 10 A at 230 VAC (AC-15)
- High contact stability for reliable low-voltage switching
- Can accommodate surge suppression elements such as varistors or RC circuits on the front
- Certified to IEC 60947 standards with UL, CSA, CE, and RoHS compliance
- Mechanical service life of up to 30 million operating cycles
- Suitable for safety functions with positively driven operation according to IEC 60947-5-1
Technical Specs of 3RH2122-2BB40
Explore Siemens 3RH2122-2BB40 specifications covering voltage, I/O, and communication to ensure system compatibility.
| Parameter | Value |
|---|---|
| Contact Configuration | 2 NO + 2 NC (Form C) |
| Coil Voltage | 24 V DC |
| Contact Rating (AC-15) | 10 A at 230 VAC, 3 A at 400 VAC |
| Frame Size | S00 (70 x 45 x 73 mm) |
| Insulation Voltage | 690 V AC, Pollution Degree 3 |
| Mechanical Service Life | 30,000,000 cycles typical |
| Mounting Type | Spring-loaded terminals |
Applications / Use Case
This Siemens 3RH2122-2BB40 is commonly used in industrial automation, production line systems, and factory control panels worldwide. Its compact design and reliable switching capability make it ideal for use as an auxiliary relay in control circuits, interlocking safety circuits, and automation sequences. The relay’s proven durability and compliance with safety standards allow it to operate efficiently in harsh environments, supporting machine safety functions and process control automation. It is widely integrated into systems requiring precise signal transmission and switching reliability in packaging lines, conveyor operations, and motion control setups.
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