TP-6126 8/02
15
Section 2 Installation
2.5.3
Auxiliary Contacts
Connect the auxiliary contacts to customer-supplied
alarms, remote indicators, or other devices. Auxiliary
contacts provide contacts that close when the transfer
switch is in the Normal position and contacts that close
when the transfer switch is in the Emergency position.
Each contact is rated 10 amps at 32 VDC or 250 VAC.
The table in Figure 2-24 lists the number of auxiliary
contacts provided with each transfer switch.
Figure 2-23, Figure 2-25, and Figure 2-26 show the
locations of the auxiliary contacts for different models.
Refer to the schematic diagram provided with the
transfer switch to identify which auxiliary contacts are
closed on Normal and which are closed on Emergency
for 600--4000 amp models. Follow the wire size and
tightening torque specifications shown on the decal on
the transfer switch.
Auxiliary Position Indicating Contacts
(rated 10 amps @ 32 VDC/250 VAC)
Number of Contacts Closed on
Normal, Emergency
Switch Rating
(Amps)
Open-
Transition
Programmed-
Transition
30--104
2, 2
—
150--400
2, 2
2, 2
150--400 *
—
6, 6
600--800
2, 2
6, 6
1000--3000
8, 8
7, 7
4000
4, 4
4, 3
* Programmed-transition with switched neutral
Figure 2-24
Number of Auxiliary Contacts Available
on Each Switch
1
1. Auxiliary contacts 10--13 and 29--32 (contacts shown with
contactor in Normal position)
6126
GM20601
12
13
11
10
31
32
30
29
Figure 2-25
Auxiliary Contacts, 30--200 Amp
Open-Transition Models
