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RAIN BIRD

621970 Relay

Description

This relay has three sets of contact “families” called poles.

Terminals

1, 4, & 7 make up pole #1 2, 5, & 8 make up pole #2 3, 6, & 9 make up pole #3

(Refer to figure 1) (Refer to figure 1) (Refer to figure 1)

Each pole is electrically independent of the others. This means that there are no wires that internally connect the three poles.

Each pole consists of three contacts, a normally closed (NC) contact, a normally open (NO) contact, and a movable contact called the wiper.

Terminals 1, 2, & 3 are the normally closed contacts.

(Refer to figure 1)

Terminals 4, 5, & 6 are the normally op Terminals 7, 8, & 9 are the wipers

en contacts.

(Refer to figure 1) (Refer to figure 1)

In addition to the three poles there are two terminals marked A & B. These terminals are connected to the coil. In this relay, the coil is operated by 24 VAC (VAC = household voltage). This allows the relay to be connected to any manufacturer’s controller that has a 24 VAC output.

Pole #1

Pole #2

Pole #3

____ 1 ____ 4

____

____

5

6

____

____

2

3

Normally closed contacts

Normally open contacts

____

____

A

B

Wipers

19

____

____

____

7

8

9

Coil

Figure 1 Bottom view of the 621970 relay

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