Specifications

February 2007
16-14
For more information visit: www.eaton.com CA08101001E
Transfer Switches
16
Transfer Switch Equipment
Wall-Mount Automatic Transfer Switches
Basic Components of the Wall-Mount ATS
Basic Components of Automatic Transfer Switches
Features, Benefits
and Functions
Cutler-Hammer Superior Design
Transfer Switch Characteristics
Unmatched Performance and Versatility
The Cutler-Hammer family of wall-
mount transfer switches offers
unmatched performance, versatility and
value for power switching applications.
At the heart of these designs is the
Cutler-Hammer Molded Case Switch,
designed specifically to meet UL 1008.
Superior Main Contact Structure
All Cutler-Hammer Wall-Mount Trans-
fer Switches meet or exceed the stan-
dards set forth in UL 1008 and UL 489.
No other transfer switch manufacturer
has met the rigid testing requirements
of this combination of standards.
Completely enclosed contacts add
a measure of safety and reliability.
It also ensures the integrity of the
contact assemblies and minimizes
the need for periodic maintenance
of the contacts, reducing downtime.
Fast, Powerful and Safe Power Switching
Mechanism
The power panel utilizes a unidirectional
gear motor mechanism. The power
panel can be operated manually under
a FULL LOAD.
Molded Case Switch Features
Molded Case Switch
■ True 4-pole switched neutral
availability.
■ Totally enclosed contact assembly.
Optional Integral Overcurrent
Protection Capability
Optional Thermal-Magnetic or Electronic
Trip Units
For service entrance and other
applications, trip units can be integrated
into the power switching section.
This eliminates the need for separate
upstream protective devices, saving
cost and space.
Source 1 and Load
Power Cable Connections
Power Switching Panel
(With Deadfront Cover Installed)
Permanently Affixed Manual
Transfer Handle Provides Safe
Manual Transfer Under Full Load
Source 2 Power
Cable Connections
Automatic Transfer
Controller (ATC-300)
■ Monitors Power Sources
■ Initiates Power Transfers
Service Disconnect Switch
(Keyed) (Service Equipment
Rated Switches Only)
Transformer Panel
■ Steps Line Power Down
to 120 Vac for Logic and
Electrical Operator
■ Available Multi-Tap
Voltage Selector
(See
Page 16-15 for
additional details.)
Space Heater (Optional)
Customer Control
Connections
Transient Voltage Surge
Suppression (TVSS) (Optional)
Control Service Disconnect
(Service Equipment Rated
Switches Only)