The Wylex 40 Amp Curve B 6kA 30mA RCBO Type A NHXS1B40 is a reliable and efficient circuit breaker designed for electrical wiring in residential or commercial settings. With a maximum amperage of 40A and a tripping characteristic of Type B, this RCBO provides over-load protection and short-circuit protection for peace of mind. The DIN rail mounting style and screw terminal electrical connection make installation easy and secure. Made from ABS/plastic material in a sleek white colour, this Wylex RCBO is a high-quality product manufactured in the United Kingdom, suitable for any room in the building. Featuring a switch control style and instantaneous break time, this RCBO is a dependable choice for electrical protection.