Mitsubishi SD-T20-DC24V-1A1B Magnetic Contactor for MS-T Series 24V DC Coil

The Mitsubishi SD-T20-DC24V-1A1B (SD-T20-DC24V-1A1B) is a 3-pole magnetic contactor from the MS-T series, designed for direct-on-line (DOL) and full-voltage non-reversing motor control. Its 24 V DC operating coil allows it to be switched from DC control circuits, while the T20 frame provides a rated current of 18 A in AC-3 duty at 380, 400, 415, and 440 V AC and a rated active power of 7.5 kW at 440 V AC according to IEC. The contactor has a rated operating voltage of 690 V and a rated impulse withstand voltage of 6 kV. The device includes one normally open and one normally closed auxiliary contact, plus screw-clamp terminals with finger protection. It is rated IP20, measures 43 mm in width, and can be mounted on DIN rail or directly on a surface. Typical uses include starting and stopping three-phase motors in pumps, fans, conveyors, compressors, and machine tools, as well as switching in low-voltage control panels. The SD-T20-DC24V-1A1B is suited to MS-T series installations that require a DC-operated contactor with auxiliary signaling contacts.