Siemens Auxiliary Contact Switch Block 3RH1921-1EA11

Siemens Auxiliary Contact Switch Block 3RH1921-1EA11

The Siemens 3RH1921-1EA11 is a lateral auxiliary contact block designed to enhance the functionality of Siemens SIRIUS series contactors. This component provides additional control and signaling capabilities, making it an essential addition for complex industrial applications.

Key Features

• Contact Configuration: Equipped with one normally open (NO) and one normally closed (NC) contact, facilitating versatile control options.
• Compatibility: Designed for seamless integration with Siemens SIRIUS 3RT1 series contactors, ranging from sizes S0 to S12.
• Mounting: Features a snap-on design for easy lateral attachment without the need for additional tools.
• Electrical Ratings: Supports operational currents up to 10A at 24V and 230V AC-12 applications, and up to 6A at 230V AC-15 applications.
• Durability: Offers a mechanical service life of up to 10 million operating cycles, ensuring long-term reliability.
• Protection: Rated with an IP20 protection class, suitable for standard industrial environments.

Technical Specifications

• Insulation Voltage: 500V with a pollution degree of 3.
• Surge Voltage Resistance: 6kV.
• Operating Temperature Range: -25°C to +60°C.
• Dimensions: 80mm (H) x 10mm (W) x 71mm (D).
• Weight: Approximately 0.049 kg.

The Siemens 3RH1921-1EA11 auxiliary contact block is engineered to provide reliable and efficient control solutions, enhancing the operational capabilities of your contactor assemblies.