Arc-fault protection, Connection possibilities – Littelfuse D0400 Series User Manual

Page 4

D0500 Junction Box

with Indication

For use with:

· D0100

· A0200

· A0300

The D0500 is designed to connect up to

8 detectors in parallel and has a separate

indication of which detec-tor(s) caused

tripping by means of a red LED for

each detector. The red LED is lit when

the light intensity exceeds 6.000lux.

on the detector, but it turns off again if

the intensity goes below 6.000lux. At

12.000lux. the arc detecting relay is trig-

gered, the active LED’s are latched and

a yellow LED (TRIP) is turned on. All

LED’s remain turned on until reset by

a common RESET button. Max. 2 boxes

per arc detecting relay is allowed

D0700 Overcurrent Relay

For use with:

· D0100

The D0700 is a 3-phase current relay to

be used in combination with a DC arc

detecting relay. The current setting range

is 1.5-3.0 x In (7.5-15A). Each time the

set current is exceeded a red LED (TRIP)

turns on and an output relay activates.

The relay contact - normally closed -

opens and cancels the blocking of the arc

detecting relay making it able to trip the

supply breaker in the case of an arcing

fault. The function of the arc detecting

relay is thus made dependent on the

current at the time of the arcing fault.

However arcing time is increased.

X
X

X

Arc-fault Protection

A0200 Detector
A0300 Detector
D0100 Arc Detecting Relay DC
D0400 Junction Box
D0500 Junction Box w/Indication
D0700 Overcurrent Relay
D0900 Arc Detecting Relay AC

X
X
X

X

X
X

X
X
X

X
X
X

X

X
X
X

Connection Possibilities