LiftMaster K41-0381-000 Transformer, 120–240VAC, for MAXUM 700
The LiftMaster K41-0381-000 is a genuine OEM transformer engineered for the MAXUM 700 operator. It accepts 120–240VAC input and steps power down to the required low-voltage supply used by the operator’s control electronics and accessories. As a critical power component, this replacement transformer restores reliable operation when the original unit has failed or is unstable, helping ensure consistent performance of the MAXUM 700 in demanding applications.
Designed specifically for the MAXUM 700, this factory part maintains compatibility and wiring integrity per LiftMaster specifications. The primary supports 120VAC or 240VAC mains, allowing field selection in accordance with the operator’s wiring diagram. Typical use involves powering the logic board and connected peripherals such as safety sensors and access controls. For safety and compliance, installation should be performed by a qualified technician with power disconnected, following the MAXUM 700 service manual and all applicable codes. Use this OEM replacement transformer when servicing or refurbishing a LiftMaster MAXUM 700 operator to retain performance and reliability with correct voltage conversion.
| Operator Series | Compatible Models | Voltage Class |
|---|---|---|
| MAXUM 700 (Trolley) | TDC7S, TDC7X | 120V / 240V 1-Phase |
| MAXUM 700 (Hoist) | JHDC7S, JHDC7X | 120V / 240V 1-Phase |
| MAXUM 700 (Jackshaft) | JDC7S, JDC7X | 120V / 240V 1-Phase |

