3RH1921-1EA11
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$11.45
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Overview of Siemens 3RH1921-1EA11
Shop genuine Siemens 3RH1921-1EA11 auxiliary switch block online for your automation system. This industrial-grade component is designed for reliable performance in demanding environments. The Siemens 3RH1921-1EA11 is a laterally mounted auxiliary contact block featuring 1NO and 1NC contacts, making it ideal for use with Siemens Sirius 3RT1 contactors from sizes S0 to S12. With a robust mechanical service life of 10 million switching cycles and electrical endurance of 200,000 cycles at AC-15, this switch block ensures long-term reliability. It is widely used in industrial automation and control panels for switching motors and other critical applications. The 3RH1921-1EA11 is certified to multiple international standards, including CCC, CSA, UL, CE, and RoHS, ensuring compliance and safety in global installations.
Key Features of Siemens 3RH1921-1EA11
- 1NO and 1NC auxiliary contacts for versatile control wiring
- Lateral mounting for easy installation on S0-S12 contactors
- 10 million mechanical and 200,000 electrical switching cycles
- Rated for 24/230 VAC and 24/110/220 VDC operation
- Complies with IEC 60947-5-1, EN 50005, and other international standards
- IP20 protection class for front-side safety
- Operating temperature range from -25°C to +60°C
- Simple screw terminal connection for secure wiring
Technical Specs of 3RH1921-1EA11
Explore Siemens 3RH1921-1EA11 specifications for detailed parameters before installation.
| Parameter | Value |
|---|---|
| Contacts | 1NO + 1NC |
| Mounting | Lateral |
| Contactor Compatibility | S0-S12 |
| Insulation Voltage | 500 V |
| Surge Voltage | 6 kV |
| Operating Temp | -25°C to +60°C |
| Storage Temp | -55°C to +80°C |
| Standards | IEC 60947-5-1, EN 50005 |
Applications / Use Case
This Siemens 3RH1921-1EA11 is commonly used in industrial automation worldwide. It is ideal for factory control panels, machine automation, and production line systems where reliable auxiliary switching is required. The block is compatible with Siemens Sirius 3RT1 contactors and is suitable for motor control, process control, and other automation tasks. Its robust design and international certifications make it a trusted choice for engineers and technicians in diverse industries.
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