QOU110 datasheet(13/32 Pages) ETC2

13 / 32 page

QOU Miniature Circuit Breakers and Switches

Accessories

09/2005

Figure 7:

Auxiliary Switch Accessory

Auxiliary Switch

The auxiliary switch accessory monitors the circuit breaker contact status

and provides a remote signal indicating whether the circuit breaker

contacts are open or closed. When the circuit breaker is OFF or tripped, the

auxiliary switch with an “A” contact is open and the auxiliary switch with a

“B” contact is closed. When the circuit breaker is on, the auxiliary switch

with an “A” contact is closed and the auxiliary switch with a “B” contact is

open. See the wiring diagram in Figure 7.

Circuit Breaker ON

Circuit Breaker OFF or Tripped

"A" Contact

"B" Contact

"A" Contact

"B" Contact

Figure 8:

Alarm Switch Accessory

Alarm Switch

The alarm switch accessory monitors the circuit breaker trip status and is

used to provide a remote warning signal indicating that the circuit breaker

has tripped. This signal can be a horn, pilot light, or some other indicator.

The contact on the standard alarm switch is open when the circuit breaker is

in the off or on position and is closed when the circuit breaker is in the tripped

position.

Alarm switches are actuated when the circuit breaker has tripped as a result

of an overload, short circuit or shunt trip operation. See the wiring diagram

in Figure 8.

Normally-open Alarm Switch

Circuit Breaker (Tripped)

Circuit Breaker (OFF or ON)

QOU110 Datasheet(PDF) 13 Page - List of Unclassifed Manufacturers