Overview
The Siemens 3RT1975-5NB32 is a high-performance changeover operating mechanism designed for use with a range of Siemens SIRIUS 3RT contactors, including the 3RT107, 3RT127, and 3RT147 series. This advanced electronic operating mechanism provides seamless and reliable switching for both AC (50-60 Hz) and DC applications.
Its standout feature is the integrated electronic operating mechanism with a direct PLC interface, enabling precise and flexible control within automated systems. The convenient spring-type terminals ensure fast, secure, and vibration-resistant wiring, making it ideal for industrial environments.
Key Benefit
- Enhanced System Control: The built-in PLC interface (24V DC) allows for direct, digital control of the contactor, improving system responsiveness and integration with automation systems.
- Versatile Compatibility: Specifically engineered for a perfect fit with Siemens 3RT107, 3RT127, and 3RT147 contactors, ensuring seamless installation and reliable operation.
- Dual-Voltage Operation: Capable of operating on both AC (50-60 Hz) and DC power supplies (21-27.3V), offering flexibility for various applications.
- Reliable Connectivity: Spring-type terminals provide a maintenance-free and secure connection, resistant to vibrations and shocks, which is crucial in demanding industrial settings.
- Robust & Durable: Manufactured with Siemens' renowned quality standards, the 3RT1975-5NB32 is built for long-term performance and reliability in harsh industrial environments.
Function
- Changeover Operation: Facilitates the changeover function for compatible contactors, essential for applications like motor reversing, star-delta starting, or dual-source switching.
- Electronic Control: An electronic operating mechanism ensures high-precision switching and reduces power consumption compared to conventional coil-based mechanisms.
- PLC Integration: The dedicated 24V DC PLC interface simplifies integration into programmable logic controllers, allowing for sophisticated control sequences and monitoring.
- Secure Wiring: Spring-type terminals clamp wires securely, providing a gas-tight connection that prevents loosening and requires no retightening.
Technical Specification
- Product Number: Siemens 3RT1975-5NB32
- Operating Voltage: 21 - 27.3 V (AC 50-60 Hz / DC)
- Operating Mechanism: Electronic with PLC interface
- PLC Interface Voltage: 24 V DC
- Compatible Contactors: Siemens 3RT107, 3RT127, 3RT147
- Terminals: Spring-type
- Manufacturer: Siemens
Application
- Motor control centers (MCCs)
- Automated industrial machinery
- Building automation systems
- Pump and fan control systems
- Control panels for complex machinery
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