The arc detecting point sensor A1000 is installed in switchboards in such a way that it has a line-of-sight to all powered connections, where an arc can develop. Typically, each compartment will have one or two sensors. The sensor is able to detect light from all angles in front of it due to the specially shaped cylindrical lens on the front of the sensor. The detection radius is dependent on the arc power. At a trip level setting on the D1000 of "1", the A1000 will react to all arcs of more than 3 kA within a 2 meter radius.

The A1000 can be installed from both sides of the switchboard enclosure, either on the inner surface or in a see-through configuration where only the lens and the mounting hardware protrudes into the enclosure. The included adhesive drill guide makes pre-drilling easy. The tough polycarbonate cabinet can be pop riveted or mounted using self-tapping screws without any extra hardware needed.

The sensor has a built-in light emitting diode, which supports a complete circuit check of the visual path of the sensor. The D1000 will periodically send a special modulated signal through the LED and listen for the return signal from the light sensitive part. This also provides visual feedback that the sensor is connected and okay.

The LED is also used for indication of status. In case of an arc fault, the LED will indicate if this sensor saw the light. While installing, the sensor LED is used to prompt the user to test the sensor, and to show feedback on the test directly where the user is, eliminating waste of time to check the sensor status on the D1000 status display.

The A1000 is supplied with 10 meters of shielded cable and a pre-mounted connector, further cutting the setup time in complicated installations. The cable can be extended or cut if needed.