Single Pole 1A MCB with breaking capacity of 10kA for use on 230/400V, 50/60Hz circuits with a rated current up to 63A for protection against overload and short circuit as well as for infrequent switching of circuits under normal conditions. Tripping characteristics of C Type - used for small motor protection, fluorescent lighting circuits and industrial applications where nuisance tripping could be a problem (5-10 ln). Recommended for use with the L5508D1A.