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Motor Start Capacitor - 'P2 Protected'

Ross Currie
Whilst dismantling an old household appliance, I noticed that the motor start capacitor is prominently marked as being 'P2 PROTECTED'.


I've had a quick look on the internet - but whilst I can find many manufacturers offering capacitors with P2 protection, none really explain what the protection is or where it is required.


Is this something similar to Class X / Class Y capacitors as defined in BS EN 60384 or is it something else entirely?
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    I'll get a better look at the document linked by Mike later, but from the descriptions above it sounds similar to a BS EN 60384 Class Y capacitor in that its intended failure mode is to open circuit?


    I'm now debating whether to keep it in my miscellaneous spare parts box or whether to cut it open for educational / curiosity purposes!


    Many thanks!
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    I'll get a better look at the document linked by Mike later, but from the descriptions above it sounds similar to a BS EN 60384 Class Y capacitor in that its intended failure mode is to open circuit?


    I'm now debating whether to keep it in my miscellaneous spare parts box or whether to cut it open for educational / curiosity purposes!


    Many thanks!
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