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Local isolator

MrJack96
Hi guys I’ve come across a local isolator that has been linked out for a motor but still can be isolated upstream. Trying to get my head around emergency switching and if a local isolator is the means of it. I always thought it was just e-stops where used for emergency switching. Guess my question is is it a big no no that’s this has been done? The isolator is getting replaced when the parts are in. 


cheers guys
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    MrJack96:

    So an isolator isn’t for emergency switching as it requires two steps? 


    Table 537.4 allows a BS EN 60947-3 switch for emergency switching, but it is the normal 100 D.P. switch as found in many consumer units. I would not choose it as a first choice for an emergency stop switch for an industrial machine application. I would use the red mushroom head with a yellow background that once activated locks off as my first choice connected through suitable circuitry.


    Z.


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  • 0
    MrJack96:

    So an isolator isn’t for emergency switching as it requires two steps? 


    Table 537.4 allows a BS EN 60947-3 switch for emergency switching, but it is the normal 100 D.P. switch as found in many consumer units. I would not choose it as a first choice for an emergency stop switch for an industrial machine application. I would use the red mushroom head with a yellow background that once activated locks off as my first choice connected through suitable circuitry.


    Z.


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