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@CanoeBoy A bad place to double "C", I meant an MCB. 6kA not so surprising for those. @Marvo I'll risk embarrassing myself, but I can't find the PM option ANYWHERE. Not on Your posts, not on anyone's post, not in any of the forum settings - it's as if the option was nonexistent. Possibly...

@Canoeboy There'a an MCCB with a measly Interrupting Capacity of 6kA. So if 60204-1 SCR is equivalent to the UL508a SCCR, I have a clear answer to "What is the SCR of this control panel". I feel slightly silly for constantly repeating this, but that was never my question -my question is "What...

@Marvo IEC 61641 looks like a relevant standard, I'll have to acquire it. Although it seems to be exclusively about testing. I'm not certain if You noticed in my post earlier, but three of Your links seem to direct me to the same exact document. Since I'm interested in the content of the other...

Concerning PEFC and PSCC, according to my understanding those are values which characterize the site's power supply, informing potentially how high the short circuit current will reach if a short circuit occurred - the client should provide these values for us, the control panel manufacturer, to...

@NozSpark To tell You the truth, I really have no idea. Could You elaborate? What do You mean by PFC/PSSC ratings? I have yet to find such parameters in any standard I've read. I believe PSCC is prospective short circuit current, which is a parameter characteristic to the site's supply. I...

@NozSpark My apologies, I'm trying to be precise, but I suppose I'm not making myself clear. The panel already exists. I am retroactively trying to determine its Short Circuit Rating. Problem: What is the Short Circuit Rating? Specifically, the one mentioned by point 16.4 of the standard...

@Marvo   I am also not based in the UK, but in Poland, so IEC-60204 is exactly what I'm interested in. I am interested in the rating for labeling purposes - 60204-1, p 16.4 states that a control panel must, among other things, have a marking stating its, I quote directly, "short circuit...

Hello, I've been charged with calculating the Short Circuit Rating of a control panel, so that it can be presented on the panels naming plate, in compliance with standard 60204-1, p. 16.4. This has proven much more difficult then I have anticipated. My main problem is that most, if not all...