Supco sxt40115 Transformer 40VA 24V 120V Class 2 Foot Mount

Product Description

The SUPCO sxt40115 is a 40 VA, Class 2 control transformer designed for low-voltage HVAC control circuits. It steps voltage down from 120 volts input to 24 volts output, powering thermostats, control boards, and other 24-volt components in forced-air heating and cooling systems. Class B insulation is used in the winding construction, contributing to thermal durability in continuous-duty applications. The foot-mount design allows direct panel or bracket installation inside the air handler or furnace cabinet. Licensed HVAC technicians and service pros are the typical installers for this type of control-circuit component.

The sxt40115 is intended for residential and light commercial HVAC applications where a 40 VA, 120-volt to 24-volt step-down transformer is required. It serves as a direct replacement for Goodman part number 013M00140S, as well as cross-reference part numbers 1170003 and PF40115. Typical install scenarios include furnace and air handler control circuit repair or upgrade, where the original transformer has failed due to overload, short circuit on the secondary, or age-related insulation breakdown.

Key Features

• 40 VA capacity supports standard 24-volt HVAC control loads
• 120-volt primary to 24-volt secondary step-down configuration
• Class 2 rating limits secondary output current for inherent circuit protection
• Class B insulation for elevated thermal endurance in continuous-duty use
• Foot-mount design for straightforward panel or bracket installation
• Direct replacement for Goodman 013M00140S, 1170003, and PF40115

Compatibility

Designed as a replacement for Goodman part number 013M00140S, with additional cross-references to part numbers 1170003 and PF40115, covering specific Goodman-manufactured transformer applications.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before removing the existing transformer or making any wiring connections. Verify that the secondary load does not exceed the 40 VA rating before energizing, as an overloaded transformer will fail prematurely or trip its thermal protector. Refer to the equipment wiring diagram and applicable local codes for proper low-voltage circuit wiring practices.

Technical Specifications

• Apparent Power: 40 VA
• Primary Voltage: 120 volts
• Secondary Voltage: 24 volts
• Transformer Class: Class 2
• Insulation Class: Class B
• Mounting Type: Foot Mount

Standard Information

• Brand: SUPCO
• Manufacturer Part Number: sxt40115