3RW3045-1AB04

The Siemens part number 3RW3045-1AB04 is a soft starter, part of the SIRIUS series, designed to facilitate smooth motor operations. It can handle a rated current of 75 A and is tailored for 3-phase applications. This specific soft starter can support motors with a power rating of up to 37 kW (50 HP) when operating at 400 V.

Operating effectively between 200 V and 460 V AC, this device provides flexibility in various electrical setups. It features an S3 size designation, indicating its suitability for numerous installation contexts. The starter is equipped with an internal bypass that enhances performance and efficiency.

Control is maintained through a 24 V AC/DC power supply. The unit incorporates both soft-start and soft-stop functions, allowing for gradual acceleration and deceleration of the motor, which helps prevent mechanical stress. The natural air-cooling mechanism ensures proper temperature management during operation. An IP20 protection class provides a degree of protection against dust and contact, although it is primarily intended for indoor use.

With dimensions contributing to a compact weight of just 0.45 kg, this starter can be easily mounted using screw connections. It operates effectively across a broad ambient temperature spectrum of -25°C to +60°C, making it suitable for diverse environments.