Wylex - NH Range - NHXSBS1B06 - 6a 30mA Type B Single Pole RCBO\n\nWylex Part Code: NHXSBS1B06\n\nPart Code: 5SU9306-6DW06\n\nCompact protection devices which combine the overcurrent functions of an MCB with the earth fault functions of an RCCB in a single unit.\n\nA range of sensitivity and current ratings are available for use in domestic installations.\n\nClass A Device\n\nClass A RCBOs and RCDs are not sensitive to impulsive currents up to a peak of 250 A (8/20 wave form). They are particularly suitable for protecting systems in which the user equipment has electronic devices for rectifying the current or phase cutting adjustment of a physical quantity (speed, temperature, light intensity etc.) supplied directly by the mains without the insertion of transformers and insulated in class I (class II is, by definition, free of faults to earth).These devices may generate a pulsating fault current with DC components which the A type RCD can recognize.\n\nClass A devices are also suitab.