Siemens
Siemens 3RV1901-2B Side Auxiliary Switch - 2 NO
Siemens 3RV1901-2B Side Auxiliary Switch with 2 NO spring terminals.
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12-month warranty
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Veteran-owned
CAGE: 9NK75
Side mounting
Spring-type terminal connections
2 Normally Open contacts
Fast installation
Designed for Siemens S00-S3 breakers
Product description
The Siemens 3RV1901-2B is a side-mounted auxiliary switch featuring spring-type terminals and two normally open (NO) contacts. It is designed to be compatible with Siemens circuit breakers in sizes S00 through S3.
This accessory is useful for applications requiring multiple signals for circuit breaker status or control, such as in automated machinery, process control systems, and electrical distribution boards where parallel signaling is needed.
Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, carries the Siemens 3RV1901-2B. We provide dependable solutions for your spare parts needs, ensuring operational continuity.
Technical specifications
| Contacts | 2 NO |
| Terminal Type | Spring-type |
| Mounting | Side |
| For Circuit Breaker Size | S00...S3 |
| Series | SIRIUS 3RV1 |
Common applications
Control circuits
Signaling
Automation systems
Motor control
Electrical panels
Compatible systems
Siemens 3RV1 circuit breakers size S00, S0, S2, S3
Also known as
Siemens 3RV19012B
3RV1901-2B Siemens switch
2 NO auxiliary switch
Replaces / compatible with
This is a phased-out product. The preferred successor is the SIRIUS 3RV2 series, specifically model 3RV2901-2B.
Technical note
Expert tip
When using the 3RV1901-2B, ensure the spring terminals are correctly engaged with the conductor for a secure and reliable connection, especially in vibrating environments.What happens next?
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Frequently asked questions
Can the Siemens 3RV1901-2B auxiliary switch be used for remote control purposes?
Yes, the Siemens 3RV1901-2B auxiliary switch, with its two normally open (NO) contacts, is suitable for remote control and signaling applications. Its spring-type terminals ensure quick connection in control circuits.