The LiftMaster K03-83224-D is a genuine replacement contactor designed to switch motor power in select LiftMaster commercial door operators and gate operators. Featuring a 24V control coil and a 32A load rating, this D-Line contactor handles the high inrush demands of operator motors, restoring reliable run, stop, and reverse functions when the original contactor is worn or failing. It is commonly used in commercial and industrial applications where dependable motor control is required for overhead doors, barrier arms, and access systems.
As a direct replacement part, the K03-83224-D is intended for LiftMaster equipment that specifies a 24V D-Line contactor in the model’s parts list or service manual. For safe installation, disconnect power, follow lockout/tagout procedures, and verify that the control voltage matches the contactor coil rating before wiring. Terminations should be secured to the operator manufacturer’s specifications, and the contactor should only be installed by a qualified technician. Confirm compatibility with your specific LiftMaster commercial garage door opener or gate operator model to ensure proper fit and operation.