Page last updated Jun 16, 2023 @ 02:29pm

ATS3W50

iota-its50r.jpg (20552 bytes) Esco-ES350.jpg (9080 bytes) Esco-LPT50BRD.jpg (5225 bytes) PMTS-30LK.jpg (102606 bytes)
Iota ITS50R Iota ITS50R Esco ES350 Wiring Esco ES350 Esco LPT50BRD Esco LPT50BRD Powermax
PMTS-50LK
Powermax
PMTS-50LK
click thumbnail image above to enlarge

Automatic Transfer Switch
for Mobile Applications

120/240VAC, 50 amp

These automatic transfer switches are designed for use in RVs with an AC "shore power" grid service. When plugged into the shore power they will automatically provide AC power to all AC appliances in the RV. To operate your appliances from an onboard generator or alternative Power source simply start them and these switches will automatically transfer the electrical power from the generator to AC appliances. They also feature a time delay of 20 to 30 seconds to allow the generator voltage to stabilize. To comply with the requirements for mobile applications the neutral is also switched. DC contactors are used to reduce chance of chatter and arcing.

If system is 120VAC only (no 240VAC) you must connect to "HOT 1" on this switch.  Connecting to "HOT 2" is optional.

 

Comparison with Other Transfer Switches
(some features not included can be added by user with additional auxiliary relays)

Feature ITS50R
LPT50BRD
ES350
Higher Cost Automatic Transfer Switches
Generator Capacity 50 amp (12 kW max) 200 amp (48 kW)
or larger
Voltage 120/240Vac 60Hz 120/240Vac 60Hz
Generator output sensed before transfer Yes Yes
Time delay before loading generator Yes Yes
Under voltage sensing starts generator Not Included Yes
Automatic retransfer when utility restored No Yes
Automatic generator exerciser clock No Usually included
Engine battery trickle charger No Usually included
Short circuit rating Low Medium-High
Dimensions (L x W x D)

Iota ITS50R
ESCO LPT50BRD
ESCO ES350
Powermax PMTS-50LK 

7.5" x 8.5" x 4"
8.5" x 8.5" x 4.5"
12" x 10" x 6
8" x 8" x 8"
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Iota ITS50R Esco LPT50BRD
discontinued

Item Number: LPT50BRD
Price: $271
Price last updated 06/16/2023
Shipping Weight: 9 lbs.
This item normally ships in approximately 1 week or less.
Powermax PMTS-50LK Esco ES350 (3 source switch)

Item Number: PMTS-50LK
Price: $161
Price last updated 06/16/2023
Shipping Weight: 9 lbs.
This item normally ships in approximately 1 week or less.

Item Number: ES350
Price: $1,031
Price last updated 04/11/2022
Shipping Weight: 9 lbs.
This item normally ships in approximately 3 days or less.

 

 

 

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