Supco t45 Multi-tap Control Transformer 120 208 240V

Product Description

The SUPCO t45 is a multi-tap control transformer designed for use in HVAC control circuits where voltage conversion between primary and secondary is required. It accepts a primary voltage of 120, 208, or 240 volts and provides multiple secondary voltage taps at 2.5, 8, 12, 16, and 24 volts, making it adaptable to a range of low-voltage control applications. Licensed HVAC technicians install this type of transformer to power thermostats, contactors, and other control components within heating and cooling systems.

This transformer is suited for residential and light commercial HVAC installations where a single unit must serve multiple voltage configurations. The multi-tap secondary is particularly useful in retrofit situations where the existing control circuit voltage may vary from system to system, reducing the need to stock multiple single-voltage transformers. It fits within standard control panel enclosures used in gas furnaces, air handlers, and packaged rooftop units.

Key Features

• Multi-tap primary accepts 120, 208, or 240 volt input
• Secondary taps at 2.5, 8, 12, 16, and 24 volts for flexible low-voltage control wiring
• Single unit covers multiple voltage configurations, reducing jobsite inventory
• Designed for HVAC control circuit applications including thermostat and contactor power

Compatibility

Designed as an OEM-style replacement for multi-tap control transformers used in residential and light commercial HVAC control circuits.

Installation Notes

Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before removing or installing the transformer. Verify primary voltage at the panel before selecting the appropriate primary tap to avoid damage to connected control components. Follow applicable NEC requirements for low-voltage control wiring in the system enclosure.

Technical Specifications

• Primary Voltage: 120, 208, or 240 volts
• Secondary Voltage Taps: 2.5, 8, 12, 16, and 24 volts

Standard Information

• Brand: SUPCO
• Manufacturer Part Number: t45