Generac® Power Systems, Inc.
7
2.7 AUXILIARY
CONTACTS
If desired, there are Auxiliary Contacts on the transfer switch to
operate customer accessories, remote advisory lights, or remote
annunciator devices. A suitable power source must be connected to
the COMMON (C) terminal. See Figure 2.4.
Contact operation is shown in the following chart:
Switch Position
Utility
Standby
Common to Normally Open
Open
Closed
Common to Normally Closed
Closed
Open
NOTE:
Auxiliary Contacts are rated 10 amps at 125 or 250 volts AC. DO
NOT EXCEED THE RATED VOLTAGE AND CURRENT OF THE
CONTACTS.
Figure 2.4 – 400A Switch Auxiliary Contacts
Side views shown in Utility position
7
Installation
0 Ground
194 +12V
23 Transfer
T1
NEUTRAL
A/C 1
24V
A/C 2
24V
LOAD 1
LOAD 2
LOAD 3
LOAD
4
A/C 1 & LOAD 1
LOAD
SUPPLY
LOAD
SUPPLY
1
2
1
2
2
2
2
1
1
1
1A MAX
1A MAX
1A MAX
1A MAX
A/C 2 & LOAD 2
LOAD 3
LOAD 4
Blue
Black
White
Yellow
Factory
wiring
Transformer
leads
Field installed
Existing
wiring
Figure 2.2 — 24 VAC Supply Connections
