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Automatic 1Ph 250A

We offer 250 amp single phase automatic transfer switches from Asco and Thomson. All models include a microprocessor controller. Open Transition (break-before-make) is standard, but see Notes in the chart below for other available options. Some models are rated 260A as marked.

Transfer
Switch
VAC Typical
Applications
Notes
Thomson
TS840SE
120/240 Farm, Telecom,
Light Industrial
Service Entrance Rated
Outdoor Enclosure only
Thomson
TS840
120/240 Farm, Telecom,
Light Industrial
 Outdoor Enclosure only
Asco 300SE Up to
600
Commercial, Telecom,
Farm, Light Industrial
Service Entrance Rated
Delayed Transition option
 Asco 300
(260A)
Up to
600
Commercial, Telecom,
Farm, Light Industrial
Delayed Transition option
Thomson
TS870SE
120/240 Commercial
Industrial,
Service Entrance Rated
Thomson
TS870
120/240 Commercial,
Industrial
 
Thomson
TS870SE-TCP
120/240 Commercial,
Industrial
Service Entrance Rated
Cam-lock Connections
Thomson
TS870-TCP
120/240 Commercial,
Industrial
Cam-lock Connections
Asco 4000
(260A)
Up to
600
Industrial, Telecom,
Commercial
Delayed Transition option
Closed Transition option
Asco 7000SE Up to
600
Mission Critical
Industrial, Telecom,
Commercial
Service Entrance Rated
Delayed Transition option
Closed Transition option
Bypass Isolation option
Asco 7000
(260A)
Up to
600
Mission Critical
Industrial, Telecom,
Commercial
Delayed Transition option
Closed Transition option
Bypass Isolation option

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