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O & M Manual for 40-1200A (480/600 Vac) 
ATC-900 3-Position, Open/Closed
 
Transition Contactor Based Transfer Switch
Instruction Booklet
 
 
 
 
Description Page
Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . . .
 . . . . . . .  2
Receiving, Handling, and Storage   . . . . . . . . . . . .
 . . . . . . .  6
Equipment Description  . . . . . . . . . . . . . . . . . . . .
 . . . . . . .  7
Installation and Wiring  . . . . . . . . . . . . . . . . . . . .
 . . . . . . .14
Operation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 . . . . . . .20
Testing and Problem Solving . . . . . . . . . . . . . . . .
 . . . . . . .21
Adjustments  . . . . . . . . . . 
. . . . . . . . . . . . . . . . . . . . . . . .23
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . .
 . . . . . . .24
Renewal Parts Guide  . . . . 
. . . . . . . . . . . . . . . . . . . . . . . .25
ATC-900 Controlled ATS Quick Start Instructions  . . . . . . . .
26