LiftMaster Electrical Box Parts — Logic Control Version 2
Genuine replacement parts for the Logic Control Version 2 electrical box. This is the second-generation logic control — it has a printed circuit board rather than the relay-and-contactor arrangement of the earlier boxes.
Two box styles were built: the standard box and the cube. They take different covers, so check the shape of yours before ordering ref 1 or 2. Transformers and overloads are specific to voltage and motor amps. Parts marked no longer available have been discontinued and are listed for identification only.
Box & Cover
| Ref |
Part # |
Description |
| 1 |
10-13790 |
Electrical Box — standard |
| 1 |
10-13792 |
Electrical Box — cube (no longer available) |
| 2 |
10-10115 |
Electrical Box Cover — now supplied as the K75-10128 |
| 2 |
10-13899 |
Electrical Box Cover — cube (K75-14347) |
Transformers, Contactor & Terminals
Overloads — Match Your Motor Amps
The overload must match the motor's full-load current, which is stamped on the motor plate. The 25-20xx series are fixed rating; the 25-13xxx and 25-10296 are adjustable.
Limit Shaft & Switches — L, S and A Groups
| Ref |
Part # |
Description |
| A1 |
23-10916 |
Interlock Switch (K23-10916) |
| L1 |
11-10021 |
Limit Shaft (K11-10021) |
| L1 |
K11-13361 |
Limit Shaft — alternative |
| S5 |
K23-10041 |
Limit Switch |
| S1–S7 |
K75-12514 |
Limit Switch Kit — complete S1 to S7 assembly (K72-12515-1) |
| — |
K72-13912 |
Limit Shaft Kit — T and GH models |
Options & Safety
| Part # |
Description |
| 71-2954029 |
Light Delay Kit |
| CPICARD |
CPI interface box |
| CPS-U |
Commercial photo eye |
| CPSUN4G |
Monitored through-beam photo eyes |
| CPS |
Safety eye sensors — mechanical operators |
| CPS-UN4 |
Safety eye sensors — commercial doors |
| K77-16011 |
Mounting hardware, CPS N4 |
| 65-5302 |
Pneumatic sensing edge, 22 ft, with take-up reel |
| LC-36A |
Safety eye sensors (no longer available) |
Other Electrical Box Versions
Contactor Style · L3 for T, GT, GH · L3 for J, H, HJ · MT, BMT, MJ, MH, HMJ
