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Never seen MK or Craptree, most of our switch gear seems to come from australia. I should have added this was for outdoor use so needed to be waterproof rated (IP66 in our case) We are not permitted to touch any fixed wiring - can't replace a light switch or powersocket for example so DIY...

Its on a 25A supply Rated at 13.5Kw heating (ducted system) Only a single phase to compressor, 2 Core + Earth cable The reason I'm looking at a 3 pole switch as it seems the electrical suppliers stock these (for 3 phase jobs) but the 2 pole switches appear to be less common. I'm still...

thanks for the replies, sourcing the switch isnt a problem (however the $180 price tag for a three pole 32 amp switch does make me gag!) I guess my question is why isolate netural? I cant see how this increases safety unless the wires are incorrecly connected at the switchboard. thx

I need to get a single phase heatpump compressor wired in with a isolating switch. The instructions call for a isolating switch the "disconnects all poles". Is netural considered a pole? If so, what is the purpose of isolating netural? thx dave