Analog Addressable NAC Output Module for FX-Series Fire Alarm Panels
Kidde Commercial

Analog Addressable NAC Output Module for FX-Series Fire Alarm Panels

SKU KD-FX-NAC

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The FX-NAC adds a supervised Notification Appliance Circuit output to any Kidde FX-Series fire alarm panel over the SLC loop. One module, one address, one pair of wires back to the panel - and you get a fully supervised 24 VDC output rated at 2 amps to drive horns, strobes, and horn-strobes anywhere the riser reaches.

Built for the commercial fire alarm installer

Mounts in a standard 4-inch square electrical box (2-1/2 in. deep or 1-1/2 in. deep with a 2-gang plate). Wiring accepts 12 to 18 AWG, with 16 and 18 AWG preferred. Supports both Class A and Class B output configurations (Class B uses a 47 k UL-listed EOL resistor), so you match the circuit supervision to the job's code requirements without swapping hardware.

Key features

  • Supervised NAC output: monitors output wiring for open and short circuits - inhibits activation on faulted wiring to protect the riser
  • Genesis synchronization: maintains horn and strobe synchronization per UL 1971 for Genesis and Enhanced Integrity notification appliances
  • Selective silence: for Genesis devices, connected horns can be silenced while strobes on the same two-wire circuit continue to flash until the panel resets
  • Class A or Class B operation: configure to meet local code requirements without changing hardware
  • Rotary addressing: set the SLC address with the onboard rotary switch, no programming tool required at the device
  • Standard box mounting: fits 4 in. square electrical boxes, no proprietary enclosures needed

System requirements

Requires a Kidde FX-Series analog addressable fire alarm control panel. The module communicates on the SLC (Signaling Line Circuit) loop, consuming one address. Address range is 01-64 on 64-point panels or 01-127 on 1000-point panels.

Specifications

SKUKD-FX-NAC
BrandKidde Commercial
Form factorAnalog addressable SLC module, mounts in standard 4 in. square electrical box
Output ratings24 VDC at 2A max
Current (standby)350 μA
Current (activated)200 μA
Communication line voltage20V peak-to-peak max
AddressingRotary, 01-64 (64-point panel) or 01-127 (1000-point panel)
Circuit supervisionClass A or Class B (47 kΩ UL-listed EOL resistor)
Wire size12, 14, 16, or 18 AWG (16 and 18 AWG preferred)
CompatibilityGenesis and Enhanced Integrity notification appliances, UL 1971 synchronization
Compatible electrical boxes4 in. square x 2-1/2 in. deep 2-gang box; 4 in. square x 1-1/2 in. deep standard box
Operating temp32 to 120°F (0 to 49°C)
Operating humidity0 to 93% RH, noncondensing at 90°F (32°C)
Storage temp-4 to 140°F (-20 to 60°C)
Ground fault impedance10 kΩ
Ship weight0.50 lbs (0.23 kg)

Documents and resources

FAQs

Does the FX-NAC support Class A wiring?
Yes. The FX-NAC supports both Class A and Class B output configurations. Class B requires a 47 kΩ UL-listed end-of-line resistor.
What notification appliances work with the FX-NAC?
The FX-NAC drives Genesis and Enhanced Integrity horns, strobes, and horn-strobes. It maintains synchronization per UL 1971, so all connected devices flash and sound in unison.
Can horns be silenced while strobes keep flashing?
Yes, when used with Genesis devices. The module allows connected horns to be silenced while strobes on the same two-wire circuit continue to flash until the panel is reset.
What electrical box does the FX-NAC mount in?
Standard North American 4-inch square electrical boxes. Compatible with 2-1/2 in. deep 2-gang boxes and standard 1-1/2 in. deep 4 in. square boxes.
How is the SLC address set?
Via the onboard rotary switch. Address range is 01-64 on 64-point control panels or 01-127 on 1000-point panels. No programming tool required at the device.
What happens if the NAC output wiring has a fault?
The module monitors the output wiring for open and short circuits. A short circuit causes the module to inhibit activation of the audible/visual signal circuit, preventing the riser from connecting to a wiring fault.
All FX Series