Siemens SIRIUS 3RT1975-5NB31 Changeover Electronic Operating Mechanism for Contactors 3RT107/3RT147, AC/DC 21-27.3V, 24V DC Original Brand New

Overview: Siemens 3RT1975-5NB31 Electronic Changeover Operating Mechanism

The Siemens 3RT1975-5NB31 is a specialized electronic changeover operating mechanism, or magnet coil, designed as a key accessory for the SIRIUS 3RT1 series power contactors, specifically models 3RT107 and 3RT147 (Size S12).

This robust component ensures reliable and precise switching within industrial control systems. It is engineered for both AC (50-60 Hz) and DC operation with a flexible control supply voltage range of 21 V to 27.3 V UC. The integration of an electronic operating mechanism with a 24 V DC PLC input makes it ideal for direct control via programmable logic controllers, simplifying wiring and enhancing system automation. Connections are secured via reliable screw terminals.

Key Benefit

• Enhanced Control: Integrated electronic drive allows for precise and fast control, especially beneficial in automated systems.
• PLC Compatibility: Direct 24 V DC PLC input simplifies the interface with modern automation controllers, reducing the need for intermediate relays.
• Dual Voltage Operation: Versatile operation on both AC (50/60 Hz) and DC control supply within the 21-27.3V range, ensuring compatibility across various installations.
• High Reliability: A genuine SIRIUS component from Siemens, guaranteeing quality, longevity, and seamless compatibility with the host contactor.
• Secure Connection: Traditional screw terminals provide a durable and reliable wiring connection for industrial environments.

Application

This changeover operating mechanism is essential for:

• Upgrading or replacing the coil in 3RT107 and 3RT147 power contactors.
• Integrating heavy-duty contactors (Size S12) into PLC-controlled automation systems.
• Applications requiring flexible AC/DC control voltage within the specified range.

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