Name: Resideo 40 VA Fan Center with SPDT Switching Action R8285A1048/U
Brand: Resideo
SKU: HONE-R8285A1048/U
Price: 58.09 USD
Availability: InStock

40 VA Fan Center with SPDT Switching Action

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Voltage	120 Vac
Supply Voltage	40 VA; 26.5 V - Secondary
Frequency	60 Hz
Electrical Ratings	11 W maximum
Application	For single-or two speed fan.
Includes	R8222B
Dimensions	4 3/16 in. high, 4 1/2 in. wide, 2 13/16 in. deep.
UL	UL Component Recognized; File No. E4436, Vol.15, Sec.1, Guide No.XAPX2
CSA	Certified: File No. LR95329-17
Switching Action	SPDT
Horsepower	3/4 HP

Installation Instructions PDF ↗

The R8285A1048 is a fan center from Resideo (Honeywell Home): a control transformer and a relay in one enclosure, rated 40 VA, with SPDT contacts.

A fan center is what lets a low-voltage thermostat run a line-voltage blower. The transformer makes the 24 V control power, the relay carries the blower current, and both live in a box that mounts on the furnace or air handler instead of being assembled from loose parts.

SPDT contacts give a normally open and a normally closed set from the same relay, so the same fan center can run a blower on a call and drop a damper or an interlock at the same time.

Note on category: this part is listed under aquastats, but it is a fan center, not a boiler water temperature control. It does not sense temperature.

Brand: Resideo (Honeywell Home)
Manufacturer Part #: R8285A1048/U
Type: Fan center (transformer + relay)
Transformer rating: 40 VA
Switch action: SPDT
UPC: 085267081153
Category: Fan Centers

Full Specifications

Application	SPDT switching for two-speed fan motor applications
Approvals and Standards	UL Component Recognized; File No. E4436, Vol.15, Sec.1, Guide No.XAPX2, CSA Certified: File No. LR95329-17
Includes	R8222B
Coil Rating Voltage	Inrush 20 VA maximum, Sealed 9 VA
Operating Frequency	60 Hz
Operating Voltage	120 Vac
Switch Action	SPDT
Warranty	1 Year
Product Height	4.19 in, 106 mm
Product Width	4.5 in, 114 mm