Electric Transfer Switch

A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator affects the transfer by throwing a switch, while others are automatic and switch when they sense one of the sources has lost or gained power.

• 3-pole or 4-pole system as required.
• Various combinations of load transfer by ACBs, MCCBs or Contactors
• Protection class up to IP 54
• Automatic and manual synchronizing
• Factory built to client's specifications
• Ratings up to 2500A

An Automatic Transfer Switch (ATS) is often installed where a backup generator is located, so that the generator may provide temporary electrical power if the utility source fails.As well as transferring the load to the backup generator, an ATS may also command the backup generator to start, based on the voltage monitored on the primary supply. The transfer switch isolates the backup generator from the electric utility when the generator is on and providing temporary power. The control capability of a transfer switch may be manual only, or a combination of automatic and manual.