Electrical ratings:
24 VDC, 168mA max
5 VDC, 28mA max
NOTE: Use shielded wiring on strobe
circuits when they are in the same
raceway as audio wiring.
Maximum loop resistance:
Total Resistance for Each Zone
70.7V RMS:
6.5 ohms max, 25W (0.35A)
3.25 ohms max, 50W (0.71A)
2.28 ohms max, 70W (1.0A)
1.63 ohms max, 100W (1.4A)
25.2V RMS:
3 ohms max, 37.5W (1.5A)
2.5 ohms max, 45W (1.8A)
Inputs
Speaker: 25.2 or 70.7V RMS
Strobe: 24V unfiltered,
full wave rectified
Outputs
Supervisory: 1.5 VDC, 0.06mA
Activated: 25.2V RMS/24 VDC,
45W max, 1.8A max
70.7V RMS,
70W max, 1.0A max
ZC3-4AB Connections and Ratings
4 - 135
Fuses
25V 3.15A, 250V (P/N 105-291200)
70V 1.6A, 250V (P/N 105-291202)
End of line resistor:
24K, ½W, ±5% (P/N 140-820405)
Max card output:
25.2V RMS, 3.9A, 100W
70.7V RMS, 1.4A, 100W
Compatible Notification Appliances:
Refer to Compatible Notification
Appliances, P/N 315-096363.
Electrical connections:
All wiring must be in accordance with
Article 760 of NEC or the local building
codes.
Some signal is lost in the zone wires
due to line resistance. Refer to the
tables on the next page to determine
the decibel loss for various wire
gauges and lengths. A reduction in
load reduces the loss. Use the largest
wire size possible for the smallest loss.
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