IP55 Enclosure c/w 63A – 100A circuit breaker. The 4th Edition regulations require that, cables running between the ESB meter box and the consumer unit should be protected by a main current device, of not less than 63A. This device to be located in the standard ESB meter cabinet. The device must be mounted in an enclosure of non-conducting material with a rating of no less than IP55. This to be mounted in the bottom right corner of the meter box. GARO’s product range of ENCLOSED MAIN CURRENT DEVICEs meets this requirement.