Series 300SE Power Transfer Switch
Fig. 15: ASCO Service Entrance Power
Transfer Switch rated 3 Pole 2000 amperes shown in Type 3R secured double door enclosure with solid neutral
The ASCO Service Entrance Power Transfer Switch combines automatic
power switching with a utility circuit breaker as a disconnect device. The power transfer switch meets all National Electrical Code requirements for installation as service entrance equipment.
Service entrance rated transfer switches generally are installed at facilities that have a single utility feed and
a single emergency power source. A circuit breaker serves as the utility disconnect
and links are provided to connect both neutral and ground conductors.
The ASCO 300SE Service
Entrance Automatic Transfer Switch uses the same reliable transfer switching mechanism and controller as the series 300 product platform, and also includes a utility circuit breaker as
a disconnect device.
Fig. 16: Rear views showing
ground fault protection with ground and neutral disconnect links
One line diagram of a typical service entrance rated transfer switch available in Solid or Switched Neutral
Product Features:
lSuitable for use as service entrance equipment.
lThe ASCO Series 300SE is listed to UL 891 standard for
lAutomatic Transfer Switch is listed to UL 1008 for total system loads.
lSizes available from 70 through 3000 amps.
lAvailable to 600 VAC, 50 or 60Hz, single or three phase. l Circuit Breaker disconnect on the normal for isolation of
transfer switch and other electrical equipment. l Disconnect link on Neutral and Ground.
l Silver plated copper ground and neutral bus.
l Solderless screw type terminals for External Power Connections.
l Ground fault trip protection provided on sizes of 1000 amperes and above.
l UL approved Type 1 enclosure.
l Available with solid or switched neutral.
l Optional TVSS Available on Normal, Emergency and/or Load.
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