CHINT RCCB ELCB Earth leakage circuit Breaker NL1-63 30ma 100ma 300ma

Tripping sensitivity
30mA – additional protection against direct contact.
100mA – co-ordinated with the earth system according to
the formula I?n ?50/R, to provide protection against
indirect contacts;
300mA/500mA – protection against indirect contacts, as well
as fire hazard.
Tripping time
Instantaneous
It ensures instantaneous tripping (without time-delay).
Short time delay
It ensures any tripping at least 10ms.
Selective
It ensures total discrimination with a nonselective RCD
placed downstream.