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Locking switch for workshop

JDW

I have two small machines running from a dedicated 16a radial circuit both on switched fused spurs 

I want to add some safety so the machines cannot be operated, I was thinking of adding a locking switch in the circuit  

Would this switch (see link) fitted before both the machines be adequate?

https://www.screwfix.com/p/schneider-electric-lisse-20ax-1-gang-dp-locking-control-switch-white/9515j

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    Further to that most damage to switch contacts is done during switch-off when the full load current is funnelled into an ever thinner ever hotter region of metal and hot gasses, until the arc is eventually stretched to breaking point.

    If you cannot limit the current, limit the time - this is why switching mains frequency AC which tends to go out at the next zero crossing, is less stressful for contactors and so on than DC, and switches for high power go to great trouble to quench the arc.

    Mike

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    Further to that most damage to switch contacts is done during switch-off when the full load current is funnelled into an ever thinner ever hotter region of metal and hot gasses, until the arc is eventually stretched to breaking point.

    If you cannot limit the current, limit the time - this is why switching mains frequency AC which tends to go out at the next zero crossing, is less stressful for contactors and so on than DC, and switches for high power go to great trouble to quench the arc.

    Mike

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