Siemens SIRIUS 3RH1921-2XA22-0MA0 Front-Side Auxiliary Switch Block, Spring-Type Terminal, for 3RT1 Contactors Original Brand New

Overview

The Siemens SIRIUS 3RH1921-2XA22-0MA0 is a high-quality, front-side mountable auxiliary switch block designed specifically for use with SIRIUS 3RT1 power contactors and 3RH1 contactor relays. This essential control circuit component expands the signaling and interlocking capabilities of your contactor, featuring a versatile 4-contact configuration: 2 Normally Open (NO) and 2 Normally Closed (NC) instantaneous contacts. Its compact snap-on design allows for quick, tool-free front mounting, and the reliable spring-type terminals ensure fast, vibration-proof wiring.

This auxiliary switch block corresponds to sequence numbers 5...8 for contactor positions, making it a standard, compatible accessory for industrial control applications. It ensures high contact reliability and long mechanical life, typical of the SIRIUS industrial controls range.

Key Benefit

• Enhanced Contactor Functionality: Expands control and signaling options for Siemens 3RT1 contactors, enabling complex automation sequences.
• Fast & Secure Wiring: Utilizes advanced spring-type terminal technology for quick, tool-free, and highly reliable electrical connections, reducing installation time and costs.
• High Reliability: Features a mechanical service life of up to 10 million operating cycles, ensuring long-term performance and minimal downtime.
• Space-Saving Design: Front-side snap-on mounting allows for easy, direct installation without requiring extra panel space.
• Industry Standard: Part of the globally recognized Siemens SIRIUS family, guaranteeing quality, compatibility, and compliance with industrial standards (e.g., IP20 protection).

Application

The Siemens 3RH1921-2XA22-0MA0 auxiliary switch block is essential for any industrial control system utilizing SIRIUS 3RT1 contactors. Typical applications include:

• Signaling: Indicating the ON/OFF status of the main contactor to control panels or SCADA systems.
• Interlocking: Creating safety circuits to prevent simultaneous activation of conflicting components (e.g., forward/reverse motors).
• PLC/Logic Control: Providing reliable feedback signals to Programmable Logic Controllers (PLCs) and other control logic devices.
• Cascade Control: Extending control signals to downstream contactors or relays.

For more of our high-quality industrial automation products and contactor accessories, visit Turll today!