Isn't all this parameters elated to the circuit breaker?
Not necessarily. Just taking domestic consumer units as an example, it might contain MCBs with a rated 6kA breaking capacity, but the overall assembly is likely to be rated at 16kA (at least if it complies with annexe ZB of BS EN 61439). The manufacturer might take any of several approaches to achieve that increase - perhaps even relying on the outer case to contain any arc products or explosion that escapes an individual MCB.
Isn't all this parameters elated to the circuit breaker?
Not necessarily. Just taking domestic consumer units as an example, it might contain MCBs with a rated 6kA breaking capacity, but the overall assembly is likely to be rated at 16kA (at least if it complies with annexe ZB of BS EN 61439). The manufacturer might take any of several approaches to achieve that increase - perhaps even relying on the outer case to contain any arc products or explosion that escapes an individual MCB.
