Specifications

Distribution Products Catalog CA08101001E—October 2010 www.eaton.com 17
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16.2
Tr a n s f er Switches
Contactor-Based Designs
Optional Features
●
Available surge protection
device (SPD) for power/
controller, engine start
circuit, phone and cable
connections
●
Automatic transfer
operation with selectable
(via programming) non-
automatic or automatic
retransfer with fail-safe
●
Space heater with
thermostat
●
Digital multi-function
power quality metering
●
Stainless steel cover
for controller
●
Load sequencing contacts
Bypass Isolation Switch
Components
Front Access
Front access is a standard
feature. Source 1 (NORMAL)
Source and Load connections
are set up as standard top
entry and Source 2
(EMERGENCY) Source
connections as bottom entry.
These connections are
located in their own separate
compartments. These
connections can be relocated
in the field if necessary.
Multi-Tap Transformer
The industry-exclusive multi-
tap system voltage selector
allows the transfer switch to
be applied on most system
voltages by proper insertion
of the selector plug.
Drawout Contactors
The ATS and the bypass
drawout cassette power
contactor designs are
identical and interchangeable.
This standard feature
allows the user the ability
to withdraw, maintain or
swap contactor assemblies,
providing redundancy of ATS
and bypass functions from
one contactor assembly to
the other.
Improved Safety
The unique Eaton design
includes separation
between control and
power components. The
ATS and bypass isolation
contactors are mounted in
separate compartments with
protective barriers between
them. This design prevents
the possibility of contact
with the rear-mounted
power connections to the
contactors. In addition, the
top and bottom entry have
separate compartment doors.
Ease of Maintenance
Transfer to the bypass power
contactor is easily initiated
and controlled via door-
mounted controls. Once
the transfer to the bypass
contactor is complete, the
ATS contactor is easily racked
out with the compartment
door closed. The ATS
contactor may then be tested
in the racked out position.
Ease of Transfer
The Eaton design allows the
operator to make a quick and
simple transfer from the ATS
power contactor to the
bypass contactor by initiating
the electrically operated
transfer via a two-position
switch. Door-mounted
indicating lights confirm
that a successful transfer
has taken place.
Dual ATS Capability
The controller on conventional
bypass isolation switches only
controls the ATS contactor.
The Eaton design allows the
switch controller to remain
active in both the ATS and
bypass modes, thus providing
control to either contactor.
This ability of the controller
to remain active and control
the bypass isolation contactor
provides “N+1” redundancy
of a second fully functioning
ATS, a feature unique
to Eaton.
Bypass Isolation Switch Components
Drawout
Bypass
Contactor
Separate Doors for ATS
and Bypass
Compartments
Multi-Tap Transformer with
Quick Connect Plug
Drawout ATS Contactor
Completely Removed
Source 2 (EMERGENCY)
Connections
Source 1 (NORMAL)
Connections
Load Connections
Front Access for
Top o r Bottom
Entry; Terminals
can be Relocated
in the Field