3RW4435-6BC44

This listing is for a remanufactured SIRIUS 3RW4435-6BC44 soft starter, a high-feature solid-state motor starting device designed for demanding industrial applications. Rated at 134 A / 75 kW in standard circuit configuration and capable of 232 A / 132 kW in an inside-delta arrangement, this unit handles a wide range of motor loads including pumps, compressors, conveyors, ventilators, and machine tools. The operating voltage range of 200–460 V AC with a 230 V AC control voltage makes it suitable for both North American and European industrial environments running at 50 or 60 Hz.

The 3RW4435-6BC44 is built around an integrated bypass contact system that minimizes internal power loss during steady-state motor operation, while onboard thyristors deliver smooth, stepless motor acceleration and deceleration. Protection features include intrinsic device protection, motor overload protection, thermistor (PTC) motor protection evaluation, and adjustable current limitation — all without requiring an external overload relay. The unit supports both soft starting with breakaway pulse and torque-controlled or voltage-ramp starting modes, reducing mechanical stress on driven equipment and limiting current spikes on the supply network.

As a part, this soft starter has been inspected, tested, and restored to fully functioning condition. Remanufactured industrial controls like this offer substantial cost savings versus new inventory while delivering the same reliable performance expected from a proven platform. The screw terminal connection type simplifies wiring integration into existing panels, and the unit’s compact footprint allows it to fit within standard enclosures alongside other SIRIUS family components.3RW4435-6BC44

This part is phased out by the original manufacturer and has been superseded by the SIRIUS 3RW5 series; however, it remains a cost-effective and fully operational solution for facilities seeking a like-for-like replacement without a full system redesign. Buyers maintaining legacy machinery or looking to keep downtime to a minimum will find this a practical and economical choice. Always verify compatibility with your existing motor control center layout and motor nameplate ratings before installation.3RW4435-6BC44

Soft Starting: Provides stepless voltage ramp and torque-controlled starting to reduce mechanical shock and limit inrush current on motor startup.
Inside-Delta Capable: Supports inside-delta circuit wiring to deliver up to 232 A / 132 kW output from a more compact panel footprint.
Integrated Bypass: Built-in bypass contact system reduces heat generation and power loss once the motor reaches full speed.
Motor Protection: Includes onboard motor overload protection and thermistor (PTC) sensor evaluation without requiring a separate external relay.
Wide Voltage Range: Accepts a main supply voltage of 200–460 V AC at 50/60 Hz, making it compatible with a broad range of global industrial power systems.