TS 910 TRANSFER SWITCH
PM140 REV 2 14/01/23 25 Thomson Power Systems
17 REQUIREMENTS FOR UPSTREAM CIRCUIT PROTECTIVE DEVICES
Standard TS 910 Series transfer switches require upstream circuit breakers to be installed on
the utility and generator supply to provide adequate overload and short circuit overcurrent
protection for the transfer switch and connected downstream loads. The transfer switch can
be used on electrical systems delivering a maximum of short circuit current as indicated in
Table 1 below provided specific types of circuit breakers (i.e. manufacturer, model and size)
are utilized. Specific circuit breaker types are listed in the following Tables based on transfer
switch amperage size.
Service Entrance rated TS 910 Series transfer switches require upstream circuit breakers to
be installed only the generator supply to provide adequate overload and short circuit
overcurrent protection for the transfer switch and connected downstream loads.
For other circuit breaker types and sizes not listed, contact Thomson Power Systems.
TABLE 1 –SHORT CIRCUIT CURRENT RATINGS
MODEL ATS TYPE POLES
MAX
VOLTAGE
AMPERAG
E
SHORT
CIRCUIT
CURRENT
1
TS912A0100A STANDARD 2 240V 100A 10kA
TS912A0100B
2 240V 100A 10kA
TS912A0200B
2 240V 200A 10kA
TS912A0400A STANDARD 2 240V 400A 25kA
TS912A0400B
2 240V 400A 25kA
TS913A0100B
3 240V 100A 10kA
TS913A0200B
3 240V 200A 10kA
TS913A0400B
3 240V 400A 25kA
1
AMPS RMS Symmetrical
To Next Page
Loading...