AOS 220 is a four-part, low voltage, heavy-duty, enclosed power switch manufactured by Fisher Controls. It is designed for safe, secure, and reliable control of remote shutoff, isolation, and switching of electrical loads. The four parts of AOS 220 include the switch and receptacle, the gearbox, the safety guard, and the mounting plate.
The switch and receptacle controls the power to the remote load. It features two accessible manual power switches, an internal fused disconnect, and an internal non-fused disconnect to ensure safety and reliability. It also includes optional motor operators or remote control systems.
The gearbox is a heavy-duty cast iron housing that encloses the components of the switch and provides protection against dirt, moisture, and other environmental contaminants. This part also helps to improve the lifespan and performance of the unit.
The safety guard serves to keep personnel from accidental contact with the switch's power. It is constructed from corrosion-resistant steel and features a polycarbonate cover to protect the switch from physical damage.
The mounting plate is designed for easy installation and mounting of the unit to an open or closed enclosure. It is also configured to accept various wiring and conduit connections.