120-688

This heavy-duty 24V transformer is an essential electrical component designed to provide reliable low-voltage power to heating and cooling systems. Serving as the primary power source for control circuits, this 40VA transformer steps down incoming line voltage to a safe 24-volt output required by thermostats, ignition modules, and furnace control boards. It is a common replacement part for HVAC systems experiencing issues with power delivery to the thermostat or failure of the contactor and relay switches. Built for efficiency and long-term durability, it supports both 50Hz and 60Hz frequencies, making it compatible with a wide range of residential and light commercial climate control equipment.
Type: Electrical Transformer
Size: Standard 40VA
Application: Used in residential furnaces, central air conditioning units, heat pumps, and boiler systems to power low-voltage controls, thermostats, and relays.
Specifications: Secondary Voltage: 24V; Power Rating: 40VA; Frequency: 50/60Hz; Type: Class 2 Control Transformer