Siemens
Siemens 3RH1122-2BB40 SIRIUS Contactor Relay - 2 NO / 2 NC, 24V DC
Siemens 3RH1122-2BB40 SIRIUS Contactor Relay - 2 NO / 2 NC
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Same-day dispatch
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Worldwide delivery
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Veteran-owned
CAGE: 9NK75
Spring-type terminals
24V DC coil
2 NO + 2 NC auxiliary contacts
Size S00
SIRIUS 3RH1 series
Phased-out product
Product description
The Siemens 3RH1122-2BB40 is a contactor relay from the SIRIUS 3RH1 series, offering 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts. It is designed for 24V DC operation and features spring-type terminals for size S00 connections.
This relay is commonly used in industrial automation for control and auxiliary circuit switching, benefiting from the quick and reliable connections provided by spring terminals. It is a phased-out product, with the preferred successor being the 3RH2122-2BB40.
Stanlo Automation, a veteran-owned supplier, offers surplus and new industrial automation parts. Source your Siemens 3RH1122-2BB40 and other critical components from us.
Technical specifications
| Type | Contactor Relay |
| Manufacturer | Siemens |
| Series | SIRIUS 3RH1 |
| Part Number | 3RH1122-2BB40 |
| Contacts | 2 NO + 2 NC |
| Coil Voltage | 24V DC |
| Terminal Type | Spring-type |
| Size | S00 |
Common applications
DC Control Circuits
Industrial Automation
Control Panels
Machine Control
PLC Outputs
Automation Systems
Compatible systems
Compatible with 24V DC control systems and PLC outputs.
Also known as
Siemens 3RH1122-2BB40 Relay
SIRIUS Spring Terminal Contactor
24VDC Control Relay
Replaces / compatible with
This product is phased out. The preferred successor is the Siemens SIRIUS 3RH2122-2BB40.
Technical note
Expert tip
The spring-type terminals on this relay provide excellent vibration resistance and are ideal for applications where frequent wire maintenance is needed.What happens next?
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Frequently asked questions
What type of terminals are on the Siemens 3RH1122-2BB40?
The Siemens 3RH1122-2BB40 features spring-type terminals, offering a quick and secure connection method for control wiring.