LiftMaster K10-10315M1 MT Electrical Box Replacement

The LiftMaster K10-10315M1 is the electrical-box service reference for the matching MT medium-duty commercial trolley operator arrangement. It identifies the box component, rather than a complete populated control assembly. Match the installed enclosure and current service recommendation before ordering, because the cover, transformer, relays and other electrical components have separate identities in the manufacturer parts information. Select the replacement by the complete part number and the installed equipment configuration. A similar photograph or a shared LiftMaster brand name does not establish interchangeability. Confirm the applicable service drawing before ordering so the repair addresses the correct component and its related mounting, connection and operating requirements.

Compatibility — Models, Versions and Exclusions

Identify the Assembly and Plan the Repair

Inspect the enclosure and its attachment points before choosing a box-only repair. Impact, corrosion or damaged wire entries may affect internal circuitry and the supporting frame as well as the shell. Have qualified personnel determine whether the existing electrical components remain suitable for transfer or need separate replacement under the exact operator service procedure.

Compare the delivered box with the actual configuration before moving components or conductors. Keep the cover, grounding arrangements and connection protection appropriate to the approved enclosure. The reference does not establish a new weather rating or authorization to relocate parts into a different box. After repair, restore the intended wiring layout and complete the required operator and protection checks.

An electrical symptom does not identify the failed component by itself. Have qualified service personnel inspect the supply, wiring, connections and equipment condition before replacing parts. Record existing labels and terminal references with power safely isolated. A replacement should restore the documented circuit arrangement; it should not be used to change operating voltage, defeat a protective function or compensate for a mechanical load that the equipment cannot safely move.

Specifications and Product Identification

Before Ordering

• Record the full MT model and control revision.
• Match the box shape, openings and mounting arrangement.
• Inspect internal components and grounding condition.
• Confirm current supplied box and separate cover requirements.

Package Contents and Separate Requirements

This offer identifies the electrical-box service item. A cover, transformer, relay set, board, limit assembly, complete wiring package and operator are not established as included. Confirm the current box inventory and select any separately required enclosure or electrical pieces from the actual service drawing.

Safety Warnings — Read Before Installation or Service

• WARNING: Electrical service can expose hazardous voltage and moving equipment. Use qualified service personnel and electrical personnel where required.
• Disconnect every applicable mains, battery and auxiliary supply before work. Follow the equipment instructions for stored energy and safe isolation.
• Do not bypass grounding, overload protection, monitored safety devices or fire-control functions to make the equipment operate. Diagnose the underlying fault.
• Restore covers and wiring protection, then complete the model-specific functional and safety checks before returning the installation to normal use.

Related Products and Important Differences

• CPS-U monitored photo eyes — separate protection devices for approved commercial-door controls; match the operator and environment.
• TDC12X1BMC MAXUM trolley operator — a complete-operator comparison, not evidence that this legacy service part fits MAXUM.

Frequently Asked Questions

Is it a complete populated control box?

No complete electrical assembly is established as included with this box reference.

Is the cover supplied?

Do not assume so. The manufacturer parts arrangement identifies the cover separately.

Does it provide a new weather rating?

No environmental-rating conversion is established. Retain the approved enclosure arrangement.

Can damaged electronics simply be moved into it?

Qualified personnel should inspect the components and cause of damage before deciding which parts can be reused.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.