• E Power Engineering

Earth Leakage Relays

MK 301A and MK 302A earth leakage relays have a favorably high immunity to electrical interference. Some of the advantageous features of these two relays are that they possess trip starting and relay tripped indicators, the ability of detection of absence of proper connection to current transformer for extra safety. For both the relays, the supply voltage must be 198 - 265 V AC with the rated frequency of 50 / 60 Hz & a VA rating of 3 VA. Its sensitivity adjustment ranges from 0.03 A to 30 A with the delay time adjustment of precisely 0 sec to 3.0 sec. Its favorable performance may be rated by its setting accuracy, which falls from 15% to +0% with a timing accuracy of ±5%. The MK302A relay has unique features such as of safety output contacts, leakage level indicators, and even remote test and reset functions. We provide ZCT’s for these relays correspondingly as per customers’ requirements. The variety of ZCT’s available are: ZCT40S (40mm dia), ZCT60S (60mm dia), ZCT80S (80mm dia), and ZCT120S (120mm dia) respectively.