3RH2122-2BB40

Siemens genuine SIRIUS 3RH2122-2BB40 auxiliary contactor, 24V DC coil with spring terminals, 4 sets of contacts (2NO+2NC), S00 compact frame, suitable for PLC and DC control circuit signal interlocking. Kenxin Motor has stock available.

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Siemens SIRIUS 3RH2122-2BB40 Auxiliary Contactor 24V DC Spring Terminal Product Image

Product Positioning

The Siemens SIRIUS 3RH2122-2BB40 is an S00 frame auxiliary contactor with a 24V DC coil and spring-loaded terminal design. It provides four sets of contacts (2NO + 2NC), making it suitable for signal interlocking and circuit expansion needs in industrial control panels.

Core Product Advantages and Features

2NO+2NC quadrupole contacts

A single component provides two sets of normally open and two sets of normally closed contacts, which can meet the requirements of multiple interlocking circuit configurations and reduce the number of components and wiring complexity.

Spring-loaded terminal quick-connect

Screwless spring-loaded terminals provide fast wiring and secure contact, reducing the risk of loosening due to long-term vibration.

24V DC coil suitable for low-voltage control systems

The coil has a rated voltage of 24V DC, making it suitable for PLC output and DC control circuits, and compatible with the Siemens SIRIUS modular platform.

S00 Small Frame Size

Its compact size allows for dense installation within the control box, effectively saving space inside the panel.

project	Specification
Brand Model	Siemens SIRIUS 3RH2122-2BB40
Contact configuration	2 NO + 2 NC (4 poles)
coil voltage	24V DC
Terminal type	Spring-loaded terminal
Shell frame	S00
Rated insulation voltage	690V AC

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