If an RV needs an Elkhart transfer switch, confirm whether the installed label reads ES50M-65N or LPT100. One is a 50A contactor arrangement with a higher-rated neutral; the other is a 100A heavy-duty transfer unit. These photographs and specifications help distinguish them before ordering.
How the ES50M-65N and LPT100 transfer power
Automatic transfer switches select between two appropriate power sources and supply one protected RV AC distribution system. Generator operation and the position of the internal relays depend on the exact unit and its factory controls.
ES50M-65N · 50A
LPT100 · 100A
Compare original ESCO switch ratings
| Exact model | Current rating | Voltage | Main electrical distinction | Time / enclosure |
|---|---|---|---|---|
| ES50M-65N | 50A per pole, 65A neutral | 240V AC rating | 110V AC coil; 3-pole normally-open contactor | About 30 seconds |
| LPT100 | 100A | 120/240V | Transfers hot poles and neutral; neutral interlock | Manufacturer timed transfer |
The ES50M-65N is specified for a 240V AC class system, rated 50A per hot pole and 65A neutral. LPT100 is a 100A, 120/240V system with a heavy-duty relay design and a neutral-transfer interlock. A higher current rating does not establish a plug-and-play substitute for a lower-rated switch.
Exact model photos and parts listings
Each product card below links to the identified model on this store. Check the label on the installed switch and the current product listing before ordering.
Original Elkhart/ESCO installation documentation
The factory resources provide actual component and terminal placement for the relevant revision. Unlike the functional diagram above, those documents distinguish relay pins, source wiring and connections for servicing.
ESCO ES50M-65N service diagram and parts · ES50M-65N manufacturer data · LPT100 manufacturer data