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MCCB in place of a disconnector

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zubair2930

zubair2930

Electrical
Oct 21, 2015
5
Dear All,

Sometimes when I go to the field, I find that sometimes they have installed MCCB in place of a disconnector to the supply side of a three phase machine.
Is it a safe practice or they should install disconnector there and I should point it out as a safety violation ??
 
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Does the MCCB meet the requirements for a disconnector? Many are dual certified to IEC 60947 as meeting the requirements for both circuit breakers and disconnectors.
 
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