Proving Units

Choose The Right Proving Unit

For voltage indicators that have a maximum 400V test range, you need the Martindale PD430 or PD440. If your voltage indicator has a maximum 690V test range, you will need the Martindale PD690 or PD700.

Always use a proving unit that will check the full range of your voltage indicator to ensure it is working correctly.

If you have a DC specific application, the Martindale PD710 will prove up to 700V DC.

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  1. Martindale PD690
    Rating:
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    Regular Price £118.80 Special Price £105.60 £88.00
    In stock

  2. Martindale PD240
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    Regular Price £82.80 Special Price £69.60 £58.00
    In stock

  3. Martindale PD430
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    Regular Price £130.80 Special Price £94.80 £79.00
    In stock

  4. PD440
    NEW
    Martindale PD440
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    Regular Price £106.80 Special Price £97.20 £81.00
    In stock

  5. PD700
    NEW
    Martindale PD700
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    Regular Price £138.00 Special Price £92.40 £77.00
    Available to Order

  6. Martindale PD710
    Rating:
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    £142.80 £119.00
    Available to Order

6 Items

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