Product Description:

The 132H2269 soft starter is produced by Danfoss within the MCD Soft Starters series. It is installed between the line supply and an induction motor to limit inrush current and reduce mechanical shock during startup, which helps protect couplings, belts, and other driven components. By controlling voltage during acceleration, it can also reduce voltage dip on the plant power system when large motors start under load. This makes starting more controlled on conveyors, pumps, fans, and similar motor-driven equipment. The unit uses an enclosed housing, so live parts are isolated from touch and the assembly is better suited for protected industrial mounting.

The starter supports motors rated up to 200 HP and operates from a 480 V AC line supply. Its power section is rated for 240 A of continuous line current, so upstream protection and conductors must be selected for that load. The control circuit uses 120 VAC from a separate source, allowing the logic section to remain independent of the main power path. Because it is built for three-phase power, the SCRs regulate each phase evenly during acceleration. The enclosure carries a NEMA 3R rating, which allows use in outdoor locations exposed to falling rain or sleet while still providing ventilation for heat dissipation.

A built-in internal bypass contactor transfers the motor off the thyristors after the ramp is complete, which reduces semiconductor heating during normal running. After the motor reaches speed, current flows through the bypass path instead of the SCR stack, helping the unit manage heat during long operating periods. That reduction in running losses can help keep internal temperatures more stable when the motor remains at full speed for extended periods. The cabinet uses an enclosed heavy-duty design with reinforced spacing and components intended for frequent starts in demanding conveyor or pump service. The power section remains enclosed during operation, which helps maintain touch protection inside the cabinet.