Siemens Auxiliary Contactor 3RH2911-1GA31
3RH2911-1GA31
Siemens
Siemens Auxiliary Contactor 3RH2911-1GA31
Need Siemens 3RH2911-1GA31? Auxiliary Contactor for SIRIUS 3RH2 series, control circuits. Price & Availability This contactor features 3 normally open (NO…
Specifications
| Brand | Siemens |
|---|---|
| Model Number | 3RH2911-1GA31 |
| Official Product Name | Auxiliary contactor, 3RH2, 3 NO + 1 NC, screw terminal, 24V DC |
| Applicable System | SIRIUS 3RH2 series, control circuits |
| Product Type | Auxiliary Contactor |
| Equivalent Standard | IEC 60947, UL, CSA |
| Product Status | In Stock |
| Coil voltage | 24 V DC |
| Operational current (AC-15) | 10 A at 230 V AC |
| Rated insulation voltage | 690 V |
| Mechanical service life | 10 million switching cycles |
| Electrical service life | 1 million switching cycles (AC-15) |
| Connection type | Screw terminals |
| Degree of protection | IP20 |
| Ambient temperature | -25°C to +60°C |
| Dimensions (W x H x D) | 45 mm x 73 mm x 130 mm |
| Standards | IEC 60947, UL, CSA |
| Number of auxiliary contacts | 3 NO + 1 NC |
Product Description
This contactor features 3 normally open (NO) and 1 normally closed (NC) contacts, providing flexible control logic for various applications. It is equipped with a 24V DC coil, making it suitable for modern PLC-based control systems that commonly use DC voltages. This auxiliary contactor is engineered for high reliability and long electrical life, with a mechanical service life of 10 million switching cycles. The screw terminal connections ensure secure and maintenance-friendly wiring, while the compact design allows for space-saving installation in control cabinets. The device is rated for an operational current of 10A at AC-15 utilization category, ensuring dependable performance in switching inductive loads. The 3RH2911-1GA31 is part of Siemens' SIRIUS modular system, offering seamless integration with other components like contactors, relays, and motor starters. It meets international standards including IEC 60947, UL, and CSA, making it suitable for global use. With its high switching capacity and durable construction, this auxiliary contactor is ideal for applications in machine building, material handling, and process control industries. The Siemens 3RH2911-1GA31 is a robust auxiliary contactor from the SIRIUS 3RH2 series, designed for use in control circuits and switching auxiliary functions in industrial automation systems.
Basic Product Information
- 24V DC coil for direct integration with PLC outputs
- Screw terminal connections for secure wiring
- Compact design for space-saving installation
- High mechanical endurance of 10 million switching cycles
- Modular SIRIUS system compatibility
- 3 NO + 1 NC auxiliary contacts for versatile control logic
Technical Specifications
Version & Model Difference
The 3RH2911-1GA31 is part of the Siemens 3RH2 series, which includes various versions with different coil voltages (AC/DC), contact configurations (e.g., 2 NO + 2 NC, 4 NO), and connection types (screw or spring-loaded). Compared to the 3RH2911-1GA22 (2 NO + 2 NC), this model offers an additional NO contact. The 'GA31' suffix indicates a 24V DC coil and screw terminals. Other versions like 3RH2911-1HA31 have a 110V AC coil, while 3RH2911-1KA31 uses 230V AC. The 3RH2911-1GA31 is specifically optimized for DC control circuits, which are common in modern PLC-based systems.
Application Scenarios
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