TwinSource Power Systems, Inc.
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Transfer switches

Static and automatic transfer switches from 10 to 600 A, single and three phase, in rack-mount, wall-mount and free-standing enclosures. Browse by category, or go straight to a family.

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By category

Rack Mount STS

Rack-mount static transfer switches from 10 to 200 A, single and three phase, with bypass and transfers as fast as a quarter cycle.

Wall Mount STS

Wall-mount static transfer switches, 10 to 120 A three phase or up to 200 A single phase, with maintenance bypass.

Free Standing STS

Free-standing static transfer switches from 100 to 600 A: three phase 3-pole or 4-pole, or single phase, with maintenance bypass. Up to 499 kVA.

Single Phase STS

Single-phase, 2-pole static transfer switches from 10 to 600 A at 100 to 240 V, 50 or 60 Hz, rack-mount, wall-mount and free-standing, with bypass.

Three Phase STS

Three-phase static transfer switches from 10 to 600 A, 200 to 480 V, 3-pole or 4-pole, in rack-mount, wall-mount and free-standing enclosures with bypass.

ATS

The TwinSource DCC-I: a 1U rack-mount automatic transfer switch, 12 to 24 A, with patented MagLatch relays. Under half a cycle, in or out of phase.

By family

ATSDCC-I

DCC-I

Rack mount, single phase
12–24 A

STSDCC-II

DCC-II

Rack mount, single phase
30–50 A

STSDCC-III

DCC-III

Rack mount, three phase
50 A

STSDCC-4-R

DCC-4-R

Rack mount, three or single phase
10–100 A

STSDCC-4-R4

DCC-4-R4

Rack mount, three or single phase
80–200 A

STSDCC-4-W

DCC-4-W

Wall mount, three or single phase
10–100 A

STSDCC-4-W4

DCC-4-W4

Wall mount, three or single phase
80–200 A

STSDCC-4-S

DCC-4-S

Free standing, three or single phase
100–600 A