Rcd ht680056 Transformer 40VA 120 to 24 Volt Hvac

Product Description

The RCD ht680056 is a step-down transformer designed to convert 120-volt line voltage to 24-volt low-voltage control power in HVAC systems. Rated at 40 VA and 60 Hz, it provides stable, continuous power to control boards, thermostats, and other low-voltage components. This transformer is used by licensed HVAC technicians as a direct OEM-style replacement when the original unit has failed due to overheating, short circuit, or age-related degradation. Reliable low-voltage supply is critical for proper system sequencing and thermostat communication.

The ht680056 is suited for residential and light commercial HVAC applications where a 120-volt primary and 24-volt secondary transformer is required. Typical installation scenarios include gas furnaces, air handlers, and split-system control circuits where the transformer feeds the low-voltage control wiring. It is a drop-in replacement for failed OEM transformers in systems using matching voltage and VA ratings.

Key Features

• Converts 120-volt line voltage to 24-volt low-voltage control power
• 40 VA power rating supports standard HVAC control circuit loads
• 60 Hz frequency matches standard North American utility power
• Compact form factor at 1 inch x 1 inch x 1 inch for tight equipment installations
• OEM-style replacement designed to restore stable low-voltage control operation

Compatibility

Designed as an OEM-style replacement transformer for HVAC systems requiring a 120-volt primary to 24-volt secondary, 40 VA rated control transformer.

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 handling any wiring connections. Verify that the replacement transformer VA rating meets or exceeds the total control circuit load before energizing the system. Follow applicable NEC guidelines for low-voltage control wiring and equipment grounding.

Technical Specifications

• Input Voltage: 120 volts
• Output Voltage: 24 volts
• Power Rating: 40 VA
• Frequency: 60 Hz
• Length: 1 inch
• Width: 1 inch
• Height: 1 inch

Standard Information

• Brand: RCD
• Manufacturer Part Number: ht680056