Description
The Functional Devices TIB40A is a 40VA Class 2 control transformer designed to step down 120VAC primary voltage to a 24VAC secondary output — the standard control voltage used throughout residential and commercial HVAC systems. Built for dependable, long-term performance, this transformer provides a stable low-voltage power source for thermostats, zone controllers, gas valves, damper actuators, and other 24VAC control devices.
Key Features
- 40VA power rating for adequate capacity across a wide range of 24VAC control loads
- 120VAC primary input to 24VAC secondary output
- Compact, panel-mount-friendly design for easy installation in air handlers, furnaces, and control enclosures
- Engineered for reliable, continuous-duty operation in HVAC control circuits
- Suitable for powering thermostats, zone panels, gas valves, actuators, and other 24VAC accessories
Specifications
- SKU: TIB40A
- Brand: Functional Devices
- VA Rating: 40VA
- Primary Voltage: 120VAC
- Secondary Voltage: 24VAC
Applications
- Residential and light commercial HVAC control circuits
- Furnace and air handler control boards
- Zoning systems and zone valve panels
- Thermostat and building automation control power supply







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