Found these discussions and Q&As online around this and am trying to determine how/ when one would decide to choose which way to go?
Type B - trips between 3 and 5 time full load current
Type C - trips between 5 and 10 times full load current
Type D - trips between 10 and 20 times full load current
I will quote more information from the above thread as we begin to understand it more.
A simpler Q&A not as detailed assessment of factors as above discussion thread.
- Reference link mentioned in the answer:
Short-circuit relay trip-current setting (Im)
Short-circuit tripping relays (instantaneous or slightly time-delayed) are intended to trip the circuit-breaker rapidly on the occurrence of high values of fault current.
There is some insight on this question but its brief and specific and does not clarify or explain which to choose in other scenarios & why?
Also will be sharing photos of existing ELCD/ MCB scenario at location for which the above fundamentals / factors need to be understood and then to arrive at a decision.