The Siemens SIRIUS Auxiliary Switch – 3RV2901-1B is a genuine accessory designed for use with Siemens 3RV2 Circuit Breakers. This side-mounted auxiliary switch with 2 NO (Normally Open) contacts provides electrical status feedback of the circuit breaker, enabling remote monitoring, control, and integration with automation systems.
The Siemens 3RV2901-1B Auxiliary Switch is designed for 3RV2 motor protection circuit breakers and features a screw terminal connection for reliable wiring. It can be mounted on the side of compatible circuit breakers and is suitable for various Siemens SIRIUS motor protection applications.
This auxiliary contact accessory is widely used in motor control centers (MCC), industrial control panels, automation systems, machine control panels, OEM electrical assemblies, and process industries where monitoring of breaker operating status is required.
At SB Smart, we supply genuine Siemens SIRIUS accessories, motor protection devices, and industrial automation products with competitive pricing, technical support, bulk order assistance, and fast PAN India delivery.
Genuine Siemens SIRIUS auxiliary switch
Designed for Siemens 3RV2 circuit breakers
Side mounting design
2 NO (Normally Open) auxiliary contacts
Screw terminal connection
Suitable for S00, S0, S2, and S3 circuit breaker sizes
Reliable status indication
Easy installation and integration
Compact industrial design
Trusted Siemens quality
Motor Protection Panels
MCC Panels
Industrial Control Panels
Automation Systems
Machine Control Systems
Electrical Distribution Panels
OEM Control Panels
Factory Automation Systems
Process Industries
Industrial Equipment Monitoring
Enables remote monitoring of circuit breaker status
Improves system visibility and control
Supports PLC and automation system integration
Reduces troubleshooting time
Enhances operational safety
Simplifies maintenance activities
Provides reliable switching performance
Helps optimize industrial control systems
100% Genuine Siemens Products
Competitive Industrial Pricing
Expert Technical Support
Bulk Order Assistance
Fast PAN India Delivery
Secure Packaging
Trusted Industrial Electrical Supplier
GST Invoice Available
Responsive Customer Support
The Siemens 3RV2901-1B is an auxiliary switch accessory used with Siemens 3RV2 circuit breakers to provide additional contact outputs for monitoring and control applications.
No. It is an auxiliary switch accessory installed with Siemens 3RV2 circuit breakers.
The 3RV2901-1B provides 2 Normally Open (NO) contacts for auxiliary signaling functions.
It is commonly installed in MCC panels, motor starter assemblies, automation panels, and industrial electrical control systems.
Yes. SB Smart supplies genuine Siemens SIRIUS accessories with competitive pricing, technical support, and fast PAN India delivery.
| Specification | Details |
|---|---|
| Product Name | Auxiliary Contact Block |
| Brand | Siemens |
| Series | SIRIUS 3RV29 |
| Model Number | 3RV2901-1B |
| SKU | 3RV2901-1B |
| Product Type | Auxiliary Contact Block |
| Contact Configuration | 1NC (1 Normally Closed) |
| Number of Contacts | 1 |
| Contact Type | Instantaneous Auxiliary Contact |
| Mounting Position | Front Mounted (Transverse) |
| Compatible Series | Siemens 3RV2 Motor Protection Circuit Breakers |
| Compatible Sizes | S00, S0, S2, S3 |
| Connection Type | Screw Terminals |
| Product Family | SIRIUS Accessories |
| Installation Method | Direct Snap-On Mounting |
| Rated Insulation Voltage (Ui) | 300 V |
| Protection Class | IP20 |
| Standards Compliance | IEC/EN 60947-5-1 |
| Application | Interlocking, Signaling, Status Monitoring |
| Industrial Applications | MCC Panels, Automation Systems, Motor Control Panels |
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