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Anonymous Poster

what is the difference of 4P MCCB and 3P MCCB

07/22/2010 4:20 PM

what is the difference of 4P MCCB and 3P MCCB, where I could apply this type of MCCB in the electrical system distribution
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: what is the difference of 4P MCCB and 3P MCCB

07/23/2010 2:24 AM

Their application is determined by local electrical codes. In the UK, British Standard 7671 applies.

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manroop
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#2

Re: what is the difference of 4P MCCB and 3P MCCB

07/23/2010 2:41 AM

The difference is just 1 ( 4-3 ) Ok !!

Manroop.Chennai.
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mountk2
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#3

Re: what is the difference of 4P MCCB and 3P MCCB

07/23/2010 3:22 AM

When some user connects precision instruments (4-20 ma or in the high frequency spectrum), use of 3P mccb may cause flutuations in readings or output as the case may be. A 4P mccb is best suited for complete isolation.

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Anonymous Poster
#4

Re: what is the difference of 4P MCCB and 3P MCCB

07/26/2010 11:05 AM

Dear Sir,

4 Pole MCBs means Three Phase and Neutral. 3 Pole shall not be having neutral for ex. Delta connection is envisaged. (Transformer Radiator Cooling Fans)

Best Wishes,

N.Suresh
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