The LiftMaster 29-ABC-15 FUSE, 15A is an OEM replacement overcurrent protection component used in select LiftMaster gate operators and commercial/industrial door operators. Also referenced as an ABC-15 (3AG) fast-acting cartridge fuse, it helps protect transformer inputs and control circuits by opening quickly during overloads or short circuits. Rated at 15 amps with an ABC-type profile commonly used in 250 Vac applications, this replacement part restores proper circuit protection in systems that specifically call for an ABC-15 fuse in the operator’s manual or on the control board fuse holder.
Installation is straightforward: disconnect power, remove the opened fuse from the panel or in-line holder, and insert a like-for-like 15A fast-acting ABC-15 fuse—no programming required. For safety and performance, replace only with the same type and rating; substituting different amperages or time-delay types can damage the operator or compromise protection. This fuse is commonly specified in LiftMaster AC-powered gate systems and commercial door operators that utilize 3AG (1/4 x 1-1/4 in) cartridge fuses. Confirm compatibility by checking your model’s service manual or parts diagram for 29-ABC-15 or ABC-15. If a replacement fuse opens again, inspect for shorted accessories, wiring faults, or failed components before restoring power.