Siemens SIRIUS 3RT1955-5XJ42 Changeover Operating Mechanism 72V DC Coil for 3RT105/3RT145 Contactors, Spring-Loaded Terminal Original Brand New

Overview: High-Performance Contactor Accessory

The Siemens 3RT1955-5XJ42 is an essential accessory from the SIRIUS 3RT series, specifically engineered as a changeover operating mechanism (solenoid coil) for use with Siemens 3RT105 and 3RT145 power contactors. It is designed for applications demanding precise and reliable control, particularly in environments with variable voltage or railway applications. This mechanism utilizes advanced circuitry to accept a wide control voltage range, making it highly versatile for integration into complex control systems.

Key Function

1. Contactor Actuation: Serves as the core component to mechanically operate (open and close) compatible Siemens 3RT105 and 3RT145 contactors.
2. Wide Voltage Compatibility: Accepts a 72 V DC main supply voltage, with an extended operating range of $72\text{ V DC}\times (0.7-1.25)$.
3. PLC Interface: Features a separate PLC input compatible with a wide voltage range from 24 V DC up to 110 V DC for flexible control integration with Programmable Logic Controllers (PLCs).
4. Secure Wiring: Equipped with spring-loaded terminals (spring-type terminals) for quick, secure, vibration-proof, and maintenance-free electrical connection, ideal for industrial and railway use.

Benefits and Features

• Exceptional Reliability: Designed to meet stringent industrial and railway standards, ensuring long-term operational stability.
• Space and Cost Efficiency: The changeover feature simplifies wiring and control logic compared to standard coils.
• Maintenance-Free Connection: Spring-loaded terminals eliminate the need for re-tightening screws, drastically reducing maintenance time and costs.
• Flexible Control: The dual-voltage input (72 V DC main and 24-110 V DC PLC) allows for seamless integration into various existing and new control architectures.
• Genuine Siemens Quality: Ensure perfect compatibility and maximum performance when pairing with your SIRIUS 3RT105 or 3RT145 contactors.

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