Bard 9043-078 - 20VA Control Transformer (4x4 Plate)

The Bard 9043-078 is an OEM 20 VA control transformer assembly (AT20D1005) mounted on a standard 4x4 plate, used to step line voltage down to low-voltage control power for Bard wall-mount HVAC equipment. If your unit has intermittent controls, a dead thermostat circuit, or repeated fuse failures on the 24V side, replacing the transformer is a common and reliable fix that restores proper power to relays, contactors, and control boards. This genuine Bard replacement is built to fit and wire like the original so you can maintain factory-correct operation, but always confirm primary voltage and lead connections against your Bard wiring diagram before installation.

Technical Specifications
Product number: 9043-078
Manufacturer description: AT20D1005 20VA Trans. 4X4 Plate
HTS Code: "8504.31.0000"

$28.00 *

* Orders less than $50 may incure a minimum order fee.