Description

The PGA-1100 Diode Logic module is an optional accessory

for the Littelfuse Arc Flash Relays.

It is used in installations with more than one breaker and

more than one Arc Flash Relay. Purpose of the unit is to

separate the trip paths, so the breakers can be tripped

independently from each other.

Typical applications are a switchboards with two incoming

feeders and one tie breaker or switchboards with several

protected zones and tripping of a common upstream circuit

breaker.

The unit has three input diodes to handle the outputs of

three Arc Flash relays and three output diodes to handle the

trip coils of three circuit breakers. If more than three relays/

circuit breakers are needed, more units can be added by

connecting terminal 8 of one box to terminal 4 of the next

one, thus increasing the number of inputs and outputs with

multiples of three.

For more application information please refer to the arc flash

relay manuals.