Product Description:

The 136G7344 soft starter is manufactured by Danfoss and is part of the MCD Soft Starters series. Used in industrial automation panels, it progressively energizes three-phase induction motors so conveyors, pumps, and compressors reach speed without the mechanical shock associated with direct-on-line starts. The unit is delivered in frame size 2 and incorporates an internal bypass contactor to minimize heat after the acceleration phase, making it suitable for compact switchboard compartments. This controlled ramp-up also helps reduce electrical and mechanical stress during motor startup.

Sized for three-phase power systems, the starter can pass a continuous motor line current of 527 A, while its main and bypass outputs are both normally open until the start command is issued. Control electronics operate from 24 V AC/DC, and a relay interface rated at 10 A at 250 V AC is provided for fault or run status signaling. The main circuit withstands a rated insulation voltage of 690 V AC and a rated impulse voltage of 6 kV. These values correspond to the clearance and creepage requirements for industrial switchgear. Protection is limited to an IP00 enclosure rating, so cabinet design must supply additional guarding. An analog output capable of driving 600 Ω loads enables proportional feedback of motor current or torque to external PLC analog inputs.

Mechanically, the 136G7344 follows an open-frame form factor, letting airflow pass across heat-dissipating surfaces while requiring installation inside a suitably rated cabinet. Despite its current capacity, the unit has a net mass of 19 kg, which helps keep handling manageable during panel installation. Overall volume is 59.4 L, which should be considered when calculating cabinet free space for thermal rise. The three-phase power architecture supports use in standard motor control cabinets and allows orderly cable routing around adjacent components.