7000 Series Service Entrance Power Transfer Switches
The ASCO Service Entrance Power Transfer
Switch combines automatic power switching with a
disconnect and overcurrent protective device on the
utility source. The power transfer switch meets all
National Electric Code requirements for installation
at a facility’s main utility service entrance. Service
entrance rated transfer switches generally are
installed at facilities that have a single utility feed
and a single emergency power source. Acircuit
breaker serves as the utility disconnect and links
are provided to disconnect both neutral and ground
connections.
This product is UL 1008 and UL 891 listed and is
available up to 600V and 4000A in Standard,
Delayed, Closed Transition, Soft Load, and Bypass
Isolation Configurations.

Page 8

Standard Features
•Available from 150 to 4000 amperes
•ASCO 7000 Series Power Transfer Switch,
UL 1008 Listed
•Standard ULType 1 Enclosure
•Disconnect and overcurrent protective device on
the utility source: molded case circuit breaker 150
to 2000 Amp; insulated case 3000 to 4000 Amp
•Disconnect link on Neutral
•Disconnect link on Ground
•Ground and Neutral Bus, all silver-plated copper
•Solderless screw type terminals for External
Power Connections
•Labeled UL 891, meets all NEC requirements for
service entrance
•Internet Enabled Command and control available with optional
ASCO SiteWeb™
Neutral
Disconnect
Link
Ground Disconnect
Link
Ground Fault
Current
Transformer
*
Utility
Circuit
Breaker
ATS
Emergency
Load
N
Ø
NØ
GFCT-
Ground Fault
Current
Transformer
ATS - Automatic Transfer
Switch
Switched
Neutral

One line diagram of a typical service entrance rated transfer

switch available in Solid, Switched or Overlapping Neutral

* Ground fault trip protection provided on sizes of 1000 amperes
and above
ASCO
Fig. 10: Ground and neutral
disconnect links