Eaton ATC-300 - Page 20

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Instructional Booklet
Page 20 Effective: May 2015
ATC-300 /900 Breaker Based Transfer Switch
Figure 19. Typical (225-1200 A) Vertical Design Transfer Switch Equipment (Door Open and Deadfront Cover Removed).
Step 1: Disconnect the power panel from the rest of the transfer
switch by unplugging the connector plugs P1, P2, and P3
(Figures 20 and 21).
NORMAL POWER
SOURCE MOLDED
CASE SWITCH
GROUND
CONNECTIONS
MANUAL
OPERATING
HANDLE
INDICATOR
WHEEL
TRANSFER
MECHANISM
MOTOR BRAKE
BOARD
EMERGENCY
POWER SOURCE
MOLDED CASE
SWITCH
NEUTRAL
CONNECTIONS
LOAD LUGS (TOP ENTRY)
POWER PANEL