mccb

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Sjamuna24 Participant Join Date: Feb 2012 Posts: 1	mccb 02/19/2012 12:51 AM
	what is the meaning For i0, in,ir in mccb 400a merlin gerin
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arifkunnath Commentator Join Date: Oct 2011 Posts: 95	#1 Re: mccb 02/19/2012 5:22 AM
	In- Rated current Ir-Thermal over load protection current Io-( I don't know)
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electricalexpert65 Guru Join Date: Oct 2009 Posts: 2061 Good Answers: 169	#2 Re: mccb 02/19/2012 8:07 AM
	I0 = Earth fault Release setting current In = Nominal Current of MCCB (rated operational current) Ir = Long Time Over current release setting current (over current or thermal setting)
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kvsridhar Guru Join Date: Sep 2009 Location: Temporarily at Ashburn, VA Posts: 2744 Good Answers: 164	#3 Re: mccb 02/19/2012 8:11 AM
	It is the 'base' or 'coarse' setting for Overload trip. Please download and study the Compact NS brochure here __________________ Nothing worthwhile can ever be taught, it can only be learnt.
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