What are Universal Transfer Switches?

Physical Design

• A universal transfer switch is comprised of a flat case housing that has an internal circuit board with memory function. It measures approximately 1.5 feet wide by 2.5 feet high, depending upon the model. It mounts to a flat wall surface, most commonly at eye level and adheres to the wall by simple screw application. The case is made of high-impact plastic.

Definition and Purpose

• A universal transfer switch allows for an uninterrupted power source (UPS) to all circuits. It senses incoming power sources and redirects essential voltage to any appliance or system that requires it. It "sheds" or shuts down power from non-essential circuits that are not being used and supplies full power to the most important or vital household circuits, like a heating or A/C system. When used with a battery backup and generator, a UPS can switch to battery power and start a generator during a complete power failure.

Benefits

• Universal power switches provide complete hands-off protection. They protect wiring by transferring sudden overloads when they sense disturbances or power peaks, such as lightning surges and high wiring resistance. They can automatically connect to a battery back-up, start a generator to provide emergency power, then shut the generator down and switch back to utility power when normal voltage has been restored. Universal transfer switches automatically stagger the start-up times of major appliances, like microwaves, refrigerators and ovens, never allowing them to start at the same time or draw unnecessary high voltage.

Features

• The universal transfer switch has a programmable computer panel that allows the user to prioritize their most essential appliances and systems. LED indicator lights alert the user to the power supply being used, either the generator, normal utility or UPS. An LCD (liquid crystal display) screen shows power usage from individual circuits by alphanumeric numbers, and displays warnings about their power condition. Inlet connections on the panel allow for a 240-volt power source and 120-volt UPS hookups.