Pentair 472508 40VA NT transformerPentair Transformer 40VA NT, 472508$5199
Pentair 472508 40VA NT transformer
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Pentair Transformer 40VA NT, 472508

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$5199
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Quick overview

  • Genuine Pentair Factory part 472508.
  • 40VA rating Listed by Pentair at 40 volt amperes.
  • NT version Listed as the NT transformer, so match the part number to your unit rather than the VA rating alone.
  • Control power A transformer of this size supplies the low voltage control circuit rather than driving a load.
  • Common failure A unit that will not power up at all, with no display and no relay click, often traces back to the transformer.
  • Check the part number Transformers with the same VA rating are not always interchangeable, so confirm 472508 against your existing part.
Full description and specifications ↓

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Product details

The Pentair 472508 is a 40VA transformer, listed as the NT version. It is the genuine Pentair part.

What it does

A transformer this size supplies the low voltage side of a control circuit. It is not powering a motor, it is powering the electronics and the relay coils that switch everything else. When it fails, the symptom is total: no display, no relay click, nothing responds, even though line voltage is present at the unit.

Confirm before ordering

Match the number on your existing transformer to 472508. Transformers that share a VA rating do not necessarily share secondary voltage or terminal arrangement, so the part number is what settles it.

Specifications
Brand Pentair
Manufacturer part number 472508
UPC 788379715717
Type Transformer
Rating 40VA
Version NT
Shipping weight 1.45 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What is the rating?
40VA. Pentair lists it as the 40VA NT transformer.
How do I confirm it is the right one?
Compare the part number on your existing transformer to 472508. Matching the VA rating alone is not enough, since voltage and terminal layout vary between otherwise similar transformers.
What are the symptoms of a failed transformer?
No control power at all: a dead display, no relays pulling in, nothing responding, while line voltage is present at the unit.
Is it a genuine Pentair part?
Yes. It is the Pentair OEM transformer, part 472508.
Ask your own question