Eaton's Automatic Transfer Switches are reliable, rugged, versatile and compact assemblies for transferring essential loads
and electrical distribution systems from one power source to another.
Transfer switches can be supplied in separate enclosures for standalone applications, or can be supplied as an integral
component in the following equipment:
- Magnum DS Switchgear
- Pow-R-Line C Switchboards
- Motor Control Centers
- Integrated Facilities Systems (IFS)
A transfer switch is a critical component of any emergency or standby power system. When the normal (preferred) source of
power is lost, a transfer switch quickly and safely shifts the load circuit from the normal source of power to the emergency
(alternate) source of power. This permits critical loads to continue running with minimal or no outage. After the normal
source of power has been restored, the re-transfer process returns the load circuit to the normal power source.
Transfer switches are available with different operational modes including:
The power switching operation of transfer switches may be separated into the three (3) key categories of:
- Open Transition - Break-before-Make operation.
- Closed Transition - Make-before-Break operation.
- Closed Transition Soft Load - Both sources are paralleled and can remain so indefinitely.
The three (3) basic components of a transfer switch are:
- Power switching device to shift the load circuits to and from the power source.
- Transfer Logic Controller to monitor the condition of the power sources and provide the control signals to the power
- Control power source to supply operational power to the controller and switching device.
All Eaton transfer switches are designed to meet the requirements set forth by CSA C22.2 Spec 178, however, all transfer
switches are not created equal. You can be assured of safe and reliable operation from all types of transfer switches that