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Anonymous Poster

MCCB P2D Duty

10/19/2009 12:59 AM

What is meant P2 duty?

What are the things to be complied for an MCCB to acheive P2 duty?
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Anonymous Poster
#1

Re: MCCB P2D Duty

10/20/2009 6:53 AM

Dearheart,

It mean P2 is twice duty P1. You need compiled all data butting P1 data for P2 rating.

(See how annoying your babble is...)
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electricalexpert65
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Join Date: Oct 2009
Posts: 2061
Good Answers: 169
#2

Re: MCCB P2D Duty

10/20/2009 7:18 AM

As per the revised IEC Standards for Low Voltage Switchgear (Under which MCCBs are covered) - IEC 60947-Part 2- MCCBs do not have any P1 Duty or P2 Duty. It was in the old standard for circuit breakers. Now, the P1 & P2 Duties are applicable only to MV & HV Breakers.

Alternately, MCCBs do have Ultimate Breaking Capacity (Icu) & Service Breaking Capacity (Ics) in the new standards.
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Anonymous Poster
#3
In reply to #2

Re: MCCB P2D Duty

10/21/2009 8:43 AM

Very much thankful for your information.
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