Upgrade your electrical safety with the Sector SVRCBO 40 Amp 30mA RCBO. This high-quality circuit breaker is perfect for protecting your Wylex boards (NSBS-B1) from short circuits and overloads. With a voltage rating of 240V and amperage rating of 3216610, this RCBO is designed to handle heavy-duty electrical loads with ease. The Sector SVRCBO features 2 poles and is compatible with a range of electrical equipment and supplies. Its ground fault interrupter and RCD capabilities ensure that your circuit is always safe and reliable. Whether you're looking to protect your business, office, or industrial equipment, this RCBO is the perfect solution.