The 5SU1324-7FA40 RCBO breaker with Inom of 40A, Ires of 30mA, poles 2, 230/400VAC, DIN mounting, and IP20 rating by Siemens is a two pole combination, residual current, and overcurrent device. It is designed to protect an electrical circuit from both shock and fire hazards by isolating power from the circuit whenever a dangerous current flows. The RCBO is triggered when an overload or short circuit current is detected, as well as an earth leakage (e.g. a person touching an exposed live component). This RCBO breaker features a lockable switch which allows for safe isolations and changes, as well as a visual trip indicator to easily identify a faulty diagnosis. Additionally, this product is certified with the highest tests standards and compliant to all low voltage directives.