Dec 30, 2009 #1 A aunglay Newbie level 6 Joined Sep 2, 2004 Messages 11 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location Singapore Activity points 112 How Can we know and decide to replace MCCB for what kind of overheating condition? What is the acceptable temperature (refer to I.R reading data ) for MCCB? <In 3 poles MCCB , 63 Amp ABB brand using with 16 mmsq cables> In my case, one of the Phase contact got Hot Spot due to the cable cap was inserted together with copper when installation and continuous using .
How Can we know and decide to replace MCCB for what kind of overheating condition? What is the acceptable temperature (refer to I.R reading data ) for MCCB? <In 3 poles MCCB , 63 Amp ABB brand using with 16 mmsq cables> In my case, one of the Phase contact got Hot Spot due to the cable cap was inserted together with copper when installation and continuous using .