Product Description

The S1-3300-3861 Transformer is a genuine OEM replacement control transformer designed for select Coleman®, York®, Luxaire®, and Guardian® HVAC systems. This transformer converts 240VAC primary voltage to 24VAC control voltage, supplying power to thermostats, relays, contactors, gas valves, and furnace control boards. Rated at 40VA, it provides reliable low-voltage power for proper HVAC system operation.

Built to OEM specifications, this transformer delivers dependable performance and long service life in residential and light commercial heating and cooling applications.

Features

• Genuine OEM Coleman replacement transformer
• 240V primary voltage
• 24V secondary output
• 40VA power rating
• Powers HVAC control circuits
• Reliable low-voltage operation
• Durable OEM-quality construction
• Direct replacement for compatible equipment
• Includes 1-Year Warranty

Technical Notes

• Part Number: S1-3300-3861
• Product Type: Control Transformer
• Primary Voltage: 240 VAC
• Secondary Voltage: 24 VAC
• Power Rating: 40 VA
• Application: Furnaces, air handlers, package units, and HVAC control systems
• Function: Supplies 24V control power for thermostats, relays, contactors, and control boards
• OEM Replacement Component
• Verify voltage, VA rating, and mounting configuration before ordering

Cross Reference

• S1-3300-3861
• 3300-3861
• Coleman Transformer
• York 24V Transformer
• HVAC Control Transformer
• 24 Volt Transformer
• 40VA Transformer
• Furnace Transformer
• Air Handler Transformer
• OEM Control Transformer