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The SUPCO sxt113 is a 40VA control transformer engineered for HVAC and refrigeration control circuit applications. It steps down primary voltage from 208VAC or 240VAC to a 24VAC secondary output, supplying the low-voltage power required to drive thermostats, contactors, relays, and other control-circuit components. The multi-mount design allows flexible installation in a variety of equipment configurations. Licensed HVAC technicians and refrigeration mechanics install this transformer as part of routine service, system upgrades, or direct replacement of failed units.
This transformer is suited for residential and light commercial HVAC and refrigeration systems that operate on 208V or 240V primary circuits and require a 24V secondary control circuit. Typical applications include split-system air conditioners, heat pumps, gas furnaces, and packaged rooftop units where low-voltage control wiring must be powered reliably. The 40VA output rating provides adequate capacity for standard control loads found in these systems.
Designed as an OEM-style replacement control transformer for HVAC and refrigeration systems requiring a 208VAC or 240VAC primary input and a 24VAC secondary control circuit output.
Installation should be performed by a licensed HVAC technician or qualified electrician. De-energize the equipment at the disconnect or breaker before removing or installing the transformer. Verify primary voltage supply matches the transformer input rating before restoring power. External overcurrent protection for the secondary circuit should be installed in accordance with NEC requirements and local codes where applicable.
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