Autocall A2081-9028 Isolated Loop Circuit Protector (ILCP) for up to 5 A of DC or audio current
The A2081-9028 Isolated Loop Circuit Protector protects fire alarm circuits from electrical transients induced on wiring that runs outside the building. It handles up to 5 A of DC or audio current with a low-impedance design that keeps voltage drop small. The unit is epoxy encapsulated and mounts in a 4 in. square electrical box where the circuit leaves or enters the building.
Key Features
- For up to 5 A of DC or audio current
- Line-to-line and line-to-earth protection stages
- Compatible with DC NACs, 25 VRMS speaker circuits, IDNAC SLCs and TrueAlert SLCs
- Listed as an Isolated Loop Circuit Protector to UL 497B
- Listed as a Surge Suppressor to ULC-S527
- Epoxy encapsulated package
Specifications
| Continuous current rating |
5 A |
| Series resistance |
0.1 ohm per line |
| Series inductance |
68 uH per line |
| Shunt capacitance |
0.017 uF |
| Response time |
<1 nanosecond |
| Maximum current, line-to-line and line-to-earth |
2000 A (8 x 20 usec pulse) |
| Maximum current, shield-to-earth |
5000 A (10 x 50 usec) |
| Dimensions |
3 3/8 in. W x 2 in. D x 1 in. H (86 x 50 x 25 mm) |
| Electrical box |
4 in. square, 2.125 in. minimum depth |
Compatible With
- Autocall fire alarm NAC, speaker, IDNAC SLC and TrueAlert SLC circuits
Documents & Downloads
