Siemens
Siemens 3RV1921-1M Signaling Switch for Circuit Breakers
Siemens 3RV1921-1M Signaling Switch
● In Stock
12-Mo Warranty
Same-Day Dispatch
Ships Worldwide
🎖 Veteran-Owned
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Response within 1 business hour
12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
Circuit Breaker Status Indication
For Siemens S0-S3 Breakers
Essential Safety Accessory
Reliable Signaling
Product description
The Siemens 3RV1921-1M is a signaling switch designed for use with Siemens circuit breakers of sizes S0 through S3. This accessory provides a signal indicating the status of the circuit breaker (e.g., tripped or closed).
This signaling switch is used in motor control centers, electrical panels, and industrial machinery where monitoring the state of circuit breakers is crucial for system safety and operation. It's often found in applications requiring remote status indication.
Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RV1921-1M. While this is a phased-out product, we can help you find this part for existing installations. The preferred successor is the SIRIUS 3RV2921-1M.
Technical specifications
| For Circuit Breaker Sizes | S0, S1, S2, S3 |
Common applications
Motor Control Centers
Electrical Panels
Industrial Machinery
Safety Monitoring
Automation Systems
Compatible systems
Siemens 3RV1 Circuit Breakers (Sizes S0-S3)
Also known as
Siemens 3RV1921-1M
Circuit Breaker Signal Switch
Replaces / compatible with
This is a phased-out product. The preferred successor is SIRIUS 3RV2921-1M.
Technical note
Expert tip
This signaling switch is intended to provide auxiliary contact information about the main circuit breaker's state.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
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 is the Siemens 3RV1921-1M signaling switch compatible with?
The Siemens 3RV1921-1M signaling switch is designed for use with Siemens circuit breakers of sizes S0, S1, S2, and S3.