Description
The Siemens SIRIUS 3RH1921-1DA11 is an auxiliary contact block designed for the SIRIUS 3RT1 contactors and 3RH contactor relays. This compact module features 1 normally open (NO) and 1 normally closed (NC) contact configuration with screw terminal connections. Designed for lateral mounting, it provides extended auxiliary contacts in control circuits for motor contactors and power contactors. The snap-on mounting design allows for tool-free installation on contactors of sizes S0 to S12, making it ideal for expanding control circuit capabilities in industrial automation applications.
Key Features
- Auxiliary Contact Block for SIRIUS 3RT1 contactors and 3RH contactor relays
- Contact configuration: 1 NO + 1 NC
- Screw terminal connections
- Lateral mounting design
- Snap-on mounting for tool-free installation
- Compatible with contactor sizes S0 to S12
- IP20 protection degree on the front
- Operating temperature: -25°C to +60°C
- Mechanical service life: 10,000,000 switching cycles typical
- Electrical endurance: 200,000 switching cycles at AC-15, 230V typical
- Country of origin: Germany
Technical Specifications
- Contact Configuration: 1 NO + 1 NC
- Operating Current:
- AC-12: 10A at 24V/230V
- AC-14: 6A at 125V/250V
- AC-15: 6A at 24V/230V, 3A at 400V
- DC-12: 10A at 24V, 3A at 110V, 1A at 220V
- DC-13: 6A at 24V, 2A at 60V, 1A at 110V, 0.3A at 220V
- Contact Reliability: 1 faulty switching per 100 million operations (17V, 1mA)
- Insulation Voltage: 500V (degree of pollution 3)
- Surge Voltage Resistance: 6kV
- Dimensions: 10mm x 80mm x 71mm (W x H x D)
- Weight: approx. 0.048kg
- Mounting: Snap-on mounting
- Connections: Screw-type terminals
- Connectable Conductor Cross-sections: 0.5-1.5mm², 0.75-2.5mm²
- AWG Conductors: 20-16, 18-14
- Operating Temperature: -25°C to +60°C
- Storage Temperature: -55°C to +80°C
- Protection Degree: IP20
- Certifications: CE, UL, CSA, FM
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty
- Technical support for system integration
- Compatibility verification with existing systems
- Commissioning assistance available
Delivery Time
- Standard delivery: 3-5 working days
- Express shipping available upon request
Why Choose Our Store
- Genuine Siemens SIRIUS components
- Global supply network with competitive pricing
- Expertise in industrial automation systems
- Comprehensive technical documentation
- Support for legacy system maintenance
Applications
- Motor contactor auxiliary circuits
- Power contactor control circuits
- Industrial automation control systems
- Machine control applications
- Process automation systems
- Conveyor system control
- Pump and motor control
- Material handling equipment
- Building automation systems
- HVAC control applications
- Packaging machinery
- Safety interlock circuits
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