Esco LYGHT 50A Relay Base Automatic Transfer Switch

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Automatic transfer switch, 50A 120/240V relay based with terminal strip.
Price: $199.96
  • Esco LYGHT 50A Relay Base Automatic Transfer Switch - Image 1
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Esco LYGHT 50A Relay Base Automatic Transfer Switch Description


Automatically switches from power cord to generator.

The LPT50BRD is intended for use as an electrical transfer switch to automatically switch multiple sources (from one to another), i.e. switching from shoreline to generator power.

The LPT50BRD is primarily designed for installation in conjunction with a generator having a rated output of no more than 12KW and an external power cord having a rated output of no more than 240VAC 1PH 60HZ, 2 poles at 50 Amps per pole.

CONTACTORS: General Purpose DPDT 50 Amp relays.
COIL: 110 VDC 2 Watts.
TIME DELAY: Custom time delay, 30 seconds nominal. Can be bypassed for instant switching.
KNOCKOUTS: Assorted.
WEIGHT: 7.95 lbs.

Install vertically or horizontally in a dry, accessible area
Consult factory before drilling metal case
Keep covered except during wiring as contactors are sensitive to debris
Hi-pot with lpt50brd disconnected or hi-pot on load side of switch.

Esco LYGHT 50A Relay Base Automatic Transfer Switch Additional Information

Item # 12989
Brand ESCO
Model LPT50BRD
Input 240VAC 1PH 60HZ, 2 poles at 50 Amps per pole.
Amperage 50 Amp
Features 240 VAC, 4 Poles, 50 Amps per pole.
Relay based.
Heavy duty relay assembly will handle 50 amp power cord and up to 12kw generator.
Transfers two hot poles and neutral simultaneously.
Generator start up delay is provided to allow the generator to get up to speed.
Utilizes a micro switch on the neutral relay to ensure neutral lines are engaged before the hot lines.
Designed with dc coiled relays to reduce hum, and terminal blocks to simplify wire connections.
Quick and easy installation.
Designed for oem and aftermarket applications.
Dimensions Enclosure: 8-1/2" x 8-1/2" x 4-1/2".
Warranty 1 Year
Net Weight 7.95
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Good replacement
I have a Tiffen Allegro 31D with two air conditioners. I fried my original transfer switch when I ran both air conditioners off a 30 amp connection at a park. Bad idea- my fault. Replaced that with a TRC Surgeguard. The TRC had the constant AC buzzing noise and it drove me crazy with the transfer switch right under the bedroom (although it did get better over time). I thought about replacing it, but then the TRC circuit board cooked itself and made the decision for me (this time not my fault- connected to shore power and sitting in storage). Replaced it with this unit. Install was simple to install, lots of knockouts for running wires into the box and lots of different sizes, unit is very durable, it switches just like I would expect it to, and the switch uses DC so THERE IS NO MORE NOISE! Very happy with the unit. It doesn't have surge protection but I can install that downstream.

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