Littelfuse Selco Arc Detection / Arc Protection


Littelfuse Selco Sensor Type-Vertikal A0200
 
A0200

Reacts on light
Available with 180º characteristic
Detectors are supplied with 5m, 10m or 15m of cable
Supplied with a mounting bracket

 

The A0200 reacts on light and is available with 180º characteristic. To be installed in each cubicle/drawer and should be shielded from normal switching arcs. Detectors are supplied with 5m, 10m or 15m of cable and a mounting bracket.

 

 





Littelfuse Selco Sensor Type-Horizontal A0300
 
A0300

Reacts on light
Available with 180º characteristic
Detectors are supplied with 5m, 10m or 15m of cable
Supplied with a mounting bracket

 

The A0300 reacts on light and is available with 360º characteristic. To be installed in each cubicle/drawer and should be shielded from normal switching arcs. Detectors are supplied with 5m, 10m or 15m of cable and a mounting bracket.

 

 





Littelfuse Selco Arc Detection Relay D0100
 
D0100

Can monitor up to 16 arc detectors in parallel
In case of arcing fault, the relay generates a fast tripping pulse
Solid state with complete isolation between input and output


Download Manuals (.PDF)
Arc Detecting Manual
Arc Detection Tech notes

Arc Detecting Relay 24-220 V A0300.0010 - Sensor H-Type 5 m cable DC for station battery.

The D0100 is a detecting relay which can monitor up to 16 arc detectors in parallel through junction boxes D0400 or D0500. In case of an arcing fault, the relay generates a fast tripping pulse, less than 1 m sec., to the circuit breaker(s) supplying the installation. The arcing time is thus reduced to the mechanical opening time of the circuit breaker. The relay is solid state with complete isolation between input and output. Thus the relay and the circuit breaker may have different pilot voltages.

 

 





Littelfuse Selco Junction Box D0400
 
D0400

Connection of up to 8 detectors in parallel without indication
Junction boxes with indication installed so that the LEDs are fully visible

 

The D0400 is for connection of up to 8 detectors in parallel without indication.

To be installed considering the length of the detector cables (5 metres), Junction boxes with indication are installed so that the LEDs are fully visible. Max. 2 junction boxes per arc detection relay.

 

 





Littelfuse Selco Junction Box D0500
 
D0500

Designed to connect up to 8 detectors in parallel
Lit when the light intensity exceeds 6.000 lux. on the detector
At 12,000 lux. the Arc Detecting Relay is triggered

 

The unit D0500 is designed to connect up to 8 detectors in parallel and has a separate indication of which detector(s) caused tripping by means of a red LED for each detector. The red LED is lit when the light intensity exceeds 6.000 lux. on the detector, but it turns off again if the intensity goes below 6.000 lux. At 12,000 lux. the Arc Detecting Relay is triggered, the active LEDs are latched and a yellow LED (TRIP) is turned on. All LEDs remain turned on until reset by a common RESET button. Max. 2 boxes per arc detecting relay are allowed.

 

 





Littelfuse Selco Overcurrent Relay D0700
 
D0700

3-phase current relay to be used in combination with a DC arc detecting relay
The current setting range is 1.5-3.0xIn (7.5-15A)

 

The D0700 is a 3-phase current relay to be used in combination with a DC arc detecting relay. The current setting range is 1.5-3.0xIn (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.

 

 





Littelfuse Selco Arc Detection Relay D0900
 
D0900

Up to 16 arc detectors in parallel through junction box D0400
In case of arcing fault, the relay generates a fast tripping pulse


Download Manuals (.PDF)
Arc Detecting Manual

The D0900 is a detecting relay which can monitor up to 16 arc detectors in parallel through junction box D0400.
In case of an arcing fault, the relay generates a fast tripping pulse, less than 1 mSec., to the circuit breaker(s) supplying the installation. The arcing time is thus reduced to the mechanical opening time of the circuit breaker. The relay is solid state with complete isolation between input and output. The relay has energy stored in a storage capacitor charged with a DC voltage to trip the circuit breaker.

The TEST position on the relay is used to test the tripping without opening the circuit breaker.