Siemens
Siemens SIRIUS 3RV1901-1A Auxiliary Switch 1NO+1NC
Siemens SIRIUS Auxiliary Switch 1NO+1NC
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12-Mo Warranty
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🎖 Veteran-Owned
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12-month warranty
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Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
1 NO + 1 NC Contacts
Side Mountable
For S00-S3 Circuit Breakers
SIRIUS Series Compatibility
Compact Design
Product description
The Siemens 3RV1901-1A is a lateral auxiliary switch designed for use with SIRIUS circuit breakers in sizes S00, S0, S2, and S3. It provides one normally open (NO) and one normally closed (NC) contact, enabling essential signaling and control functions within an electrical enclosure.
This auxiliary switch is crucial for applications requiring status feedback or interlocking mechanisms in motor control centers, distribution boards, and other industrial electrical systems.
Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RV1901-1A. We ensure you receive reliable components for your automation needs.
Technical specifications
| Contacts | 1 NO + 1 NC |
| Mounting | Lateral (Side Mount) |
| For Circuit Breaker Size | S00...S3 |
| Protection | IP20 |
| Voltage | Up to 690V AC |
| Current | Up to 10A AC-12 |
Common applications
Circuit Breaker Signaling
Motor Control Feedback
Control Panel Wiring
Electrical Safety Interlocks
Status Monitoring
Compatible systems
Siemens SIRIUS 3RV1 Circuit Breakers (S00-S3)
Also known as
Siemens 3RV1901-1A
SIRIUS Auxiliary Contact
Replaces / compatible with
This is a phased-out product. The successor is SIRIUS 3RV2, with the preferred successor type being 3RV2901-1A.
Technical note
Expert tip
This auxiliary switch is designed for side mounting onto the specified SIRIUS circuit breaker sizes.What happens next?
1
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2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
What circuit breaker sizes are compatible with the Siemens 3RV1901-1A auxiliary switch?
The Siemens 3RV1901-1A auxiliary switch is designed to be mounted laterally on SIRIUS circuit breaker sizes S00, S0, S2, and S3.