Description
The Johnson Controls Y65T31-0 is a reliable, energy-limiting control transformer engineered for demanding HVAC and building automation applications. Designed to step down line voltage to a safe 24V secondary output, this transformer is compatible with a wide range of commercial and residential control systems.
Key Features
- Multi-tap primary voltage: 120V, 208V, and 240V for flexible installation across various electrical systems
- 24V AC secondary output — the standard control voltage for HVAC thermostats, valves, and actuators
- 40 VA capacity to power a broad range of control circuits and loads
- Energy-limiting type overload protection for enhanced safety and compliance — eliminates the need for a separate fuse in many applications
- Male fittings with 8″ primary leads for straightforward primary-side wiring and connection
- Three screw terminals on the secondary side for secure, reliable low-voltage connections
- Foot or 4″ mounting options for versatile installation in control panels, air handlers, and enclosures
Electrical Specifications
- Primary Voltage: 120 / 208 / 240V AC
- Secondary Voltage: 24V AC
- VA Capacity: 40 VA
- Overload Protection: Energy Limiting Type
Connection Details
- Primary Connections: Male fittings with 8″ primary leads
- Secondary Connections: Three screw terminals
- Mounting: Foot or 4″ mounting configuration
Applications
- HVAC control circuits (thermostats, zone valves, actuators)
- Building automation and energy management systems
- Commercial and light industrial control panels
- Fan coil units, air handling units, and rooftop equipment
The Y65T31-0’s energy-limiting overload protection is a key safety advantage, automatically limiting output current under fault conditions to protect downstream control wiring and components. The multi-tap primary design makes this transformer an adaptable solution for facilities with varying supply voltages, reducing the need to stock multiple transformer models. Trust Johnson Controls engineering and Jackson Systems for quality HVAC components delivered fast.
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