Littelfuse D0920 - Technical Specifications

D0920 Arc-Detection Unit Rev. 0-D-070616
www.littelfuse.com • © 2016 Littelfuse • • 12/18
4 TECHNICAL SPECIFICATIONS
4.1 D0920
Supply: 230 Vac (+15, -30%), 50/60 Hz
Sensor Sensitivity: 1 to 12 mA (2 to 24 klux)
Maximum Number of Sensors: 2
Nominal Trip Energy: 3.5 Ws (Joule) at 325 Vdc, 68 µF capacitance
Trip Level Accuracy: 5%
Trip Time: 1 ms maximum
External Trip: Active when Terminals 4 and 7 connected, limit to 1 s
(exceeding the 1 s time limit may damage the trip coil or
the D0920)
Output Relays:
Trip Coil:
Contact Configuration: Normally Open
Voltage: 325 Vdc Peak at 230 Vac supply
Nominal Energy: 3.5 Ws (Joule) at 325 Vdc, 68 µF capacitance
Mode: Close on Trip
Terminals: 7, 8
Relay K1:
Contact Configuration: Form A, Normally Open
Mode: Close on Trip
Rating: 120 Vac, 5 A
Terminals: 9, 10
Relay K2:
Contact Configuration: Form B, Normally Closed
Mode: Close on Loss of Supply or Test Mode
UL Rating: 150 Vac, 0.46 A, 65 Vdc, 0.46 A
Terminals: 11, 12
Unused Terminals: 13-16
Dimensions:
Height: 90 mm (3.5”)
Width: 105 mm (4.1”)
Depth: 60.5 mm (2.4”)