The WYLEX 40 AMP CURVE B 6kA 30mA RCBO TYPE A NHXS1B40 is a high-quality circuit breaker designed for electrical wiring applications. With a maximum amperage of 40A and a tripping characteristic of Type B, this RCBO offers reliable protection against earth faults. It features a DIN rail mounting style, screw terminal electrical connection, and a control style with an on/off switch. The white-coloured device is made of ABS/plastic material and is suitable for wall mounting in any room. Manufactured in the United Kingdom by Wylex, this RCBO is a valuable addition to any electrical setup.