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Automatic Transfer Switch
120VAC, 30 amp
Safely connect an inverter and an AC generator to the same house wiring. Switch can be used with inverters that do not have built-in transfer switch capability. If the generator is not running, the inverter is connected to the house wiring. When the generator is started, the house wiring is automatically disconnected from the inverter and connected to the generator. A time delay feature allows the generator to warm-up before the transfer takes place. DC coils on relays eliminate chatter on low voltage.
Comparison with Other Transfer Switches
(some features not included can be added by user with additional auxiliary relays)
|Higher Cost Automatic Transfer Switches|
|Generator Capacity||30 amp (3.6 kW max)||200 amp (48 kW)
|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|
|Factory Warranty||2 years
|Dimensions (L x W x D)|| 7.5" x 8.5" x 4"
8.5" x 8.5" x 4.5"
7.25" x 8.37" x 4.0"
Iota ITS30R Esco LPT30BRD Progressive Dynamics PD5110010