Description Place of Origin : China Brand Name : Chint Model Number : NL1-63 Type : Residual Current Poles Number : 2 Rated Voltage : 240V/415V Rated Frequency : 50/60hz Chint original NL1-63 RCD Differential switches 2P 4P RCCB ELCB type A type AC CHNT Residual Current Operated Circuit Breaker   1. General  1.1 Function       Control electric circuits.       Protect people against indirect contacts and additional protection against direct contacts.       Protect installations against fire hazard due to insulation faults.       Residual current circuit breakers are used in housing, tertiary sector and industry.   1.2 Selection       Detectable wave form       AC class       Tripping is ensured for slowly increasing sinusoidal AC residual currents.       A class       Tripping is ensured for sinusoidal AC residual currents and for pulsed DC residual currents, whether applied suddenly or                   increasing slowly.       – S, G/SI class       Tripping is ensured not only for sinusoidal AC residual currents but also for pulsed DC residual currents whether applied                   suddenly or increasing slowly. S, G/SI type with filters against spurious tripping caused by harmonics and transient surges. With       the impact of 8/20us surge 3000A, this high immunity RCCB will still be in stable status.         Tripping sensitivity       10mA – precision instrument leakage protection and bathroom use.       30mA – additional protection against direct contact.       100mA – co-ordinated with the earth system according to the formula IΔn <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.