Originally I started this “technical corner” because I believed information was either too complicated, too disparaged, but most of all too dispersed (all over the place- UL there, IEC there etc) in relation to its discipline or too focused on e.g. a manufacturer. I wanted to make it easier…if I succeeded I don’t know…but then […]
Product technical / data sheets: Is that all it provides, data? I could look at a datasheet only and tell you books about the product and the spirit of the company and its management. In this brave new world of ours, if the information is not readily available it can be a product or service […]
Circuit breakers are designed according to he purpose it must serve ..in this case protecting a circuit – with the smallest size wires – whilst still having to contend with all kinds and of types of loads, thus it is called utilization categories…the jobs it does. In other words, it is all about the current […]
By some unwritten rule – or maybe the first successful manufacturer designed it with this width and voila it became the default with for the smallest single miniature circuit breaker. ===>>>OOPS…You are not logged in for this group!
What is the real voltage rating when it says 240/400V on circuit breakers? A better question to ask is why not just put 400Vac? The technical problem is: Ratings change at different voltages so this can’t possibly be a dual voltage product, can it? So, what does that mean? To be inclusive – The above […]
Surprisingly there are multiple ways to determine the Prospective Short Circuit Current Value. It is also important to note that the value closest to the transformer is the highest and decreases according to the distance in the reticulation from the main supply transformer, . ===>>>OOPS…You are not logged in for this group!
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Circuit breakers mounted in a row, without any spacing between them, brings about the grouping derating factor, ===>>>OOPS…You are not logged in for this group!
Depending on the technology used temperature does affect the tripping point of a circuit breaker. What does this mean in real terms? If you are the type of designer that runs components to the max then it is very important to consider this derating factor. ===>>>OOPS…You are not logged in for this group!