The LiftMaster 20-1100C-2N is an OEM replacement motor engineered for select LiftMaster commercial door and gate operators that require a 1 HP, single-phase drive. Designed for dependable performance, it operates on dual-voltage 115/230 VAC and features a C-face (CF) mounting configuration for straightforward bolt-on replacement to compatible gearboxes or operator heads. Its N4X (NEMA 4X) rating indicates enhanced protection against water and corrosion, making it suitable for demanding indoor or outdoor locations consistent with NEMA 4X environments.
Key technical attributes include 1 HP output, 115/230V single-phase power, C-face mounting, and an N4X enclosure rating. As a genuine LiftMaster component, part number 20-1100C-2N is intended for use in commercial applications where a sealed, corrosion-resistant motor is specified by the operator manufacturer. Installation should be performed by a qualified technician: mount via the C-face interface, connect leads per the motor nameplate for the selected voltage, verify proper rotation, and ensure the operator’s controls are configured for a single-phase 1 HP motor. Maintain all gaskets and fittings to preserve the NEMA 4X protection level, follow local electrical codes and grounding requirements, and consult the operator’s manual for alignment and tensioning procedures.


