Dual-Lite ATSD20 20 Amp Auxilary Transfer Switch

Application
The ATSD20 works in conjunction with an emergency lighting inverter or auxiliary generator to power switched and dimmed emergency lighting loads up to 20 Amps. The device senses the loss of normal power and, in response, switches the lighting load to a designated emergency source. This allows for a switch or dimmer to be overridden
so that full emergency power can be provided to the designated fixtures, regardless of switch position. The switch is compatible with all lamp types, although HID type lamps are not recommended as the time to achieve full illumination may not be acceptable to NFPA 101 standards when switching to emergency power from an off position.

Construction
The ATSD20 enclosure and cover are constructed of 20 gauge steel with a gray paint finish and is surface mountable.

Installation
The ATSD20 does not affect normal fixture operation and comes fully assembled for immediate installation. In addition to available wiring, the device requires a direct, unswitched connection to a normal power circuit and, depending on the application, an unswitched connection to a generator-supplied or central inverter system-supplied emergency panel. (See diagram on second page of PDF Specification)

Compliances
UL Damp location listed
UL 1008 Listed (Transfer Switch Equipment)
NFPA 101 Life Safety Code
NFPA 70 National Electrical Code

Warranty
Unit and Electronics: 5 years full