This is a Brand New Trane/American Standard 24 volt Transformer. It has a primary voltage of 460 volts and It's rated at 50 VA. The Trane Part # is TRR01019 (also X13550263010 & 4000Y04AW18K42). Thanks for looking and good luck!
Transformers are devices used in electrical circuits to change the voltage of electricity flowing in the circuit. Transformers can be used either to increase the voltage (called "step up") or decrease the voltage ("step down"). Transformers found in furnaces are "step down" transformers and usually convert 120-240 volt to 24 volt.
Replaces Old Part #s:
TRR01019 X13550263010 4000Y04AW18K42
Repair Difficulty Level:
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