The Siemens 3RV2901-1F Auxiliary Contact Block is a reliable accessory designed for SIRIUS 3RV2 Motor Protection Circuit Breakers (MPCBs). This front-mounted auxiliary contact module expands the signaling and control capabilities of motor protection breakers by providing 2 Normally Open (2NO) auxiliary contacts, making it ideal for status indication, control interlocking, PLC interfacing, and industrial automation applications.
Engineered for seamless compatibility with Siemens 3RV2 motor protectors in sizes S00, S0, S2, and S3, the 3RV2901-1F can be easily mounted on the front of the circuit breaker without increasing the overall width of the assembly. This compact design helps optimize panel space while maintaining easy access for wiring and maintenance.
The auxiliary contact block features 2 Normally Open (2NO) instantaneous contacts, enabling users to implement additional control functions such as remote status monitoring, motor running indication, alarm signaling, interlocking circuits, and PLC input feedback. These contacts provide dependable switching performance in industrial control systems and motor starter applications.
Designed with durable screw terminal connections, the 3RV2901-1F Auxiliary Contact Block ensures secure wiring and long-term reliability in demanding industrial environments. The screw terminal design simplifies installation and maintenance while providing excellent vibration resistance and electrical continuity.
As part of the Siemens SIRIUS motor control portfolio, this auxiliary contact block delivers reliable operation and full compatibility with Siemens motor protection solutions. It is commonly used in motor control centers (MCCs), industrial automation systems, machinery control panels, HVAC installations, process plants, water treatment facilities, and OEM equipment.
The Siemens 3RV2901-1F offers a simple and cost-effective way to increase the functionality of motor protection circuit breakers, enabling enhanced control logic, signaling functions, and system monitoring capabilities in modern industrial applications.
| Specification | Details |
|---|---|
| Product Name | Auxiliary Contact Block |
| Brand | Siemens |
| Series | SIRIUS 3RV2 |
| Model Number | 3RV2901-1F |
| SKU | 3RV2901-1F |
| Product Type | Auxiliary Contact Block |
| Contact Configuration | 2NO (2 Normally Open) |
| Number of Contacts | 2 |
| Mounting Position | Front Mounted |
| Compatible Series | Siemens 3RV2 Motor Protection Circuit Breakers |
| Compatible Sizes | S00, S0, S2, S3 |
| Connection Type | Screw Terminals |
| Contact Type | Instantaneous Auxiliary Contacts |
| Rated Operational Current (AC-15, 230V) | 0.5A |
| Application | Signaling, Status Indication, PLC Interface |
| Installation Method | Direct Snap-On Mounting |
| Product Family | Siemens SIRIUS Accessories |
| Industrial Applications | MCC Panels, Control Panels, Automation Systems, Motor Starters |
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