Transformers supply and expand power for fire alarm control panels and notification circuits. The common case is a NAC power expansion transformer that raises the available notification current when a panel's built-in supply cannot carry all the horns and strobes on a circuit.
Size by the total notification load, not by device count — candela setting drives strobe current, so two apparently identical devices can draw very different amounts. Confirm the primary voltage available at the panel location (120V or 240V) and that the unit is listed for fire alarm service.
Silent Knight
Silent Knight 115061 Transformer, Power, 12036VAC, 85VA, 6LEAD
Sale price$48.05
Regular price$57.66
Not in stock - available on backorder - lead time on request
Fire-Lite
Fire-Lite XRM-24 Transformer, Expands NAC Circuit Power from 3 to 5 Amps, Flex 404 Only
Sale price$166.90
Regular price$200.28
In Stock
Resideo
Resideo RA889A1001 120V, 60 Hz Switching Relay with SPDT switching, RA889A1001
Sale price$87.50
Regular price$105.00
Not in stock - available on backorder - lead time on request
Fire-Lite
Fire-Lite XRM-24B Optional Transformer for Fire Alarm Control Panels, 24 Volt 100VA, 120 VAC 60 Hz Input
Sale price$181.40
Regular price$217.68
Not in stock - available on backorder - lead time on request
Simplex
Simplex 4081-9308 Battery Cabinet with Charger, 220/230/240 VAC Multi-Tapped Input
Sale price$2,904.00
Regular price$3,484.80
In Stock
Westell
Westell 560-000367 ACI Split Core Current Transformer, 10/20/50:5 A
Sale price$175.60
Regular price$210.72
Not in stock - available on backorder - lead time on request
HyperSpike
HyperSpike 90179A-801 70V Constantvoltage Transformer
Sale price$1,441.35
Regular price$1,729.62
In Stock
Resideo
Resideo AT72D1725 Multi mounting 120/208/240 V AC Transformer with 9 in Leadwires
Sale price$42.55
Regular price$51.06
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1733 Multi Mounting Transformer with 9 in Lead Wires
Sale price$47.45
Regular price$56.94
Not in stock - available on backorder - lead time on request
Resideo
Resideo YTH8321WF1044 WiFi VisionPRO 8000 and TrueZONE 8 in Damper
Sale price$440.25
Regular price$528.30
Not in stock - available on backorder - lead time on request
Resideo
Resideo YTH8321WF1036 WiFi VisionPRO® 8000 with TrueZONE Fresh Air Damper and transformer
Sale price$425.80
Regular price$510.96
Not in stock - available on backorder - lead time on request
Resideo
Resideo R841E1068 24 V SPST switching Electric Heater Relay
Sale price$230.45
Regular price$276.54
Not in stock - available on backorder - lead time on request
Resideo
Resideo R841C1151 600V SPST switching Electric Heater Relay
Sale price$124.40
Regular price$149.28
Not in stock - available on backorder - lead time on request
Resideo
Resideo R841C1144 347V SPST switching Electric Heater Relay
Sale price$114.15
Regular price$136.98
Not in stock - available on backorder - lead time on request
Resideo
Resideo R841C1029 240V SPST switching Electric Heater Relay
Sale price$98.40
Regular price$118.08
Not in stock - available on backorder - lead time on request
Resideo
Resideo R8239D1007 40 VA Fan Center with DPST Switching Action
Sale price$113.00
Regular price$135.60
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT41A1012 Foot mounted 120 V AC Transformer with 7 in Primary Leadwires
Sale price$48.20
Regular price$57.84
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT175B1055 Foot mounted 120 V AC Transformer with 9 in Leadwires, with manual reset
Sale price$73.10
Regular price$87.72
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT150B1146 Foot mounted 120/208/240 V AC Transformer with 9 in Leadwires
Sale price$34.20
Regular price$41.04
Not in stock - available on backorder - lead time on request
Resideo
Resideo RT850T-347 Solid State Relay with 24-347V Built-in Transformer
Sale price$130.60
Regular price$156.72
Not in stock - available on backorder - lead time on request
Resideo
Resideo RT850T-240 Solid State Relay with 24-240V Built-in Transformer
Sale price$113.95
Regular price$136.74
Not in stock - available on backorder - lead time on request
Resideo
Resideo RT850 Solid State Heating Relay, 120 Vac TRIAC, w/ out Transformer
Sale price$86.25
Regular price$103.50
Not in stock - available on backorder - lead time on request