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.
Resideo
Resideo L8148E1299 High Limit Vertical Mount Aquastat Relay, 15-Degree(F) differential w/ 50VA Transformer, L8148E1299
Sale price$357.10
Regular price$428.52
Not in stock - available on backorder - lead time on request
Resideo
Resideo L8148A1017 High Limit Horizontal Mount Aquastat Relay, 8-Degree(F) differential, L8148A1017
Sale price$273.70
Regular price$328.44
Not in stock - available on backorder - lead time on request
Resideo
Resideo HZ311K TrueZONE Kit with DATS, Transformer and HZ311 Panel
Sale price$218.45
Regular price$262.14
Not in stock - available on backorder - lead time on request
Resideo
Resideo HZ221K TrueZONE Kit with DATS, Transformer and HZ221 Panel
Sale price$229.30
Regular price$275.16
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT88A1047 Foot Mounted 480 Vac Transformer w/ 12" Lead Wires & Internally Fused Secondary for Overload Protection, AT88A1047
Sale price$147.65
Regular price$177.18
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT88A1005 Foot Mounted 120 Vac Transformer w/ 12" Lead Wires and Internally Fused Secondary for Overload Protection, AT88A1005
Sale price$153.10
Regular price$183.72
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT87A1189 Foot Mounted 277 Vac Transformer w/ 12" Lead Wires & Energy Limiting Overload Protection, AT87A1189
Sale price$75.10
Regular price$90.12
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT87A1155 Foot Mounted 480 Vac Transformer with 12 in. Lead Wires and Energy Limiting Overload Protection, AT87A1155
Sale price$86.90
Regular price$104.28
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT87A1106 Foot/Plate Mounted 120/208/240 Vac Transformer w/ 13" Lead Wires, Built in Protection & Primary Winding Burnout, AT87A1106
Sale price$63.40
Regular price$76.08
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT87A1049 Foot Mounted 120 Vac Transformer w/ 12" Leadwires & Energy Limiting Overload Protection, AT87A1049
Sale price$99.75
Regular price$119.70
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1691 Plate Mounted 208/240 Vac Transformer with 9" Lead Wires, AT72D1691
Sale price$55.60
Regular price$66.72
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1683 Foot Mounted, Plate Mounted, or Clamp Mounted 120 Vac Transformer w/ 9 in. Lead Wires (40VA), AT72D1683
Sale price$47.75
Regular price$57.30
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1188 Plate Mounted 120 Vac Transformer w/ 9" Lead Wires, AT72D1188
Sale price$54.00
Regular price$64.80
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1089 Foot Mounted 120 Vac Transformer with 9 in. Lead Wires, AT72D1089
Sale price$52.25
Regular price$62.70
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1048 Plate Mounted 120 Vac Transformer w/ 9 in. Lead Wires w/ 1/2" Female Conduit Spud w/ 32" Lead Wires, AT72D1048
Sale price$59.25
Regular price$71.10
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1006 Plate Mounted 120 Vac Transformer with 9 in. Lead Wires, AT72D1006
Sale price$49.85
Regular price$59.82
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT40A1162 Foot Mounted 120 Vac Transformer w/ 9" Lead Wires (40VA), AT40A1162
Sale price$68.05
Regular price$81.66
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT40A1139 Channel Frame or Foot Mounted 240 Vac Transformer with 9 in. Lead Wires, AT40A1139
Sale price$54.40
Regular price$65.28
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT40A1121 Foot Mounted 120 Vac Transformer with 9 in. Lead Wires (NEMA D Rating), AT40A1121
Sale price$47.85
Regular price$57.42
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT20B1056 Conduit Clamp Mounted Transformer w/ 9" Lead Wires, 120 VAC, AT20B1056
Sale price$36.60
Regular price$43.92
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT20A1123 Foot Mounted 120 Vac Transformer with 9 in. Lead Wires, AT20A1123
Sale price$45.25
Regular price$54.30
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT175F1031 Plate/Panel Mounted 208/277/480 Vac Transformer w/ 9" Lead Wires & Button for Manually Resetting Circuit Breaker, AT175F1031
Sale price$91.70
Regular price$110.04
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT175F1023 Plate or Panel Mounted 120/208/240 Vac Transformer with 9 in. Lead Wires and Metal End Bells, AT175F1023
Sale price$90.35
Regular price$108.42
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT175A1008 Foot mounted 120/208/240 Vac Transformer w/ 9 in. Lead Wires (75VA), AT175A1008
Sale price$72.95
Regular price$87.54
Not in stock - available on backorder - lead time on request