Siemens SIRIUS 3RT2046-1NF30 Power Contactor, 95A, 45kW, AC-3e/AC-3, 3-Pole, AC/DC 83-155V Coil, Size S3, Screw Terminal Original Brand New

Overview

The Siemens 3RT2046-1NF30 is a robust and compact power contactor from the globally recognized SIRIUS 3RT2 series, engineered for the reliable switching of electric motors and other loads in industrial automation systems. This specific model is a high-performance, 3-pole device rated for 95 A (AC-3e/AC-3) and 45 kW at 400 V. It features an advanced wide-range electronic operating mechanism, accepting an 83-155 V AC/DC control supply voltage, which simplifies procurement and global inventory. Its integrated varistor ensures coil surge suppression, enhancing system safety and longevity.

Benefit

• High Performance in a Compact Design: As part of the SIRIUS modular system, the Size S3 contactor delivers a high-current 95 A and power rating of 45 kW while maintaining a compact footprint, optimizing space within control cabinets.
• Maximum Flexibility (AC/DC Control): The wide-range 83-155 V AC/DC coil significantly simplifies logistics and engineering, as a single device type covers both AC and DC control voltage requirements within this range, improving design versatility.
• Enhanced Reliability and Protection: The integrated varistor efficiently suppresses voltage peaks caused by coil switch-off, protecting the contactor's electronics and surrounding control devices from damage.
• Globally Approved and IE3/IE4 Ready: Approved for worldwide use (IEC, UL/CSA, CCC, etc.) and optimized for use with energy-efficient IE3/IE4 motors, ensuring future-proof compliance and international usability.
• Simple Integration: Pre-fitted with 1 NO + 1 NC auxiliary contacts, the 3RT2046-1NF30 simplifies wiring for status signaling and interlocking functions. The standard screw terminals ensure a reliable and straightforward connection.

Function

The Siemens 3RT2046-1NF30 power contactor is primarily used for switching three-phase motors in applications such as pumps, conveyors, fans, and compressors. It acts as an electrically controlled switch: when the control voltage (83-155 V AC/DC) is applied to the coil, the main contacts close, connecting the motor to the power supply. The integration into the modular SIRIUS system allows for seamless combination with motor protection circuit breakers (MPCBs) and overload relays (like the 3RU21/3RB30 series) to build a complete, factory-tested load feeder.

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