The LiftMaster K74-35295-4-10 is a factory OEM E-BOX assembly engineered for LiftMaster GH commercial hoist door operators. Labeled “E-BOX, GH, 460V, 3PH, L4, N4,” it is built for systems that run on 460‑volt three‑phase power and use the LiftMaster Logic 4 control platform, supplied in an NEMA 4 rated enclosure for demanding commercial and industrial environments. This replacement control box restores the original operating logic and wiring architecture for GH operators used on sectional and rolling steel doors in warehouses, manufacturing, distribution, and other heavy‑duty applications.
As a complete electrical control enclosure, the K74-35295-4-10 typically includes the factory‑wired logic control, transformer, contactor/relays, and terminal points for door controls, interlocks, and entrapment protection accessories used with GH operators. It is intended specifically for GH models configured for Logic 4 and 460V three‑phase service; it is not a universal control and should not be used on other series or Logic 5 platforms. Installation and setup must be performed by qualified personnel following LiftMaster commercial operator instructions and local electrical codes, including proper lockout/tagout, verification of the operator nameplate voltage/phase, and reconnection of external safety devices per UL 325 requirements. The NEMA 4 enclosure is suitable for wet or dusty locations when installed as directed, making this assembly a reliable OEM replacement or like‑for‑like service part for maintaining GH hoist operator performance.