Name: Supco SXT105 Transformer 40VA
Brand: Supco
SKU: SXT105
Price: 29.09 USD
Availability: InStock

Supco SXT105 Transformer 40VA

Description

Product Summary

The Supco SXT105 Transformer 40VA is a professional-grade replacement part from Supco (Sealed Unit Parts Co.), a trusted name in HVAC/R and appliance parts since 1945. A complete line of control transformers designed for HVAC/R applications.

Control transformers step line voltage down to the 24VAC used by thermostats, contactors, gas valves, and control boards. Choose the correct primary voltage(s) and a VA rating equal to or higher than the original; a blown transformer is a common cause of a dead thermostat.

Key Features

Class 2 Rated
Foot Mount
Output VA: 40VA
Primary: 120V / 208V / 240V
Secondary: 24V

Specifications

Brand	Supco
Part Number	SXT105
Part Type	Transformer
Primary voltage	120VAC/208VAC/240VAC
Secondary voltage	24VAC
Output voltage	40VA
Breaker/Fuse	None
Mount type	Foot

Cross Reference

The Supco SXT105 is a direct replacement for the following OEM and competitor part numbers. Always verify ratings and fit against the original part before installing.

Replaces Part #	Manufacturer	Description
AT40A1121, AT40A1139, AT40B1214	Honeywell®
90-T40F3	White Rodgers®
UET105	UEI®
50354	Mars®
4031F	Jard®

White Paper

What's Included

(1) Supco SXT105 Transformer 40VA

Safety: Always disconnect power and follow lockout/tagout procedures before servicing electrical components. Installation should be performed by a qualified technician.

Extra Information

Find your comfort-ready size with confidence

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This is a sizing estimate for general guidance only. Always confirm final size, duct design, and fuel type with a Professional before purchasing equipment or pulling permits.

Brand:

Supco

Weight:

2.00 LBS

Safety Information:

⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Prop 65 Warning:

Yes

Part Type:

Transformer

Primary voltage:

120VAC/208VAC/240VAC

Secondary voltage:

24VAC

Output voltage:

40VA

Breaker/Fuse:

None

Mount type:

Foot

Replaces:

AT40A1121, AT40A1139, AT40B1214, 90-T40F3, UET105, 50354, 4031F

Please Note: To validate the manufacturer's warranty, equipment must be installed by a qualified licensed professional in accordance with local codes and the manufacturer's installation requirements.