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The magneto-thermal switch is located next to the circuit breaker and integrates a magnetic protection with a thermal one and, if necessary, interrupts the electric current. The circuit breaker is, therefore, a system that combines the functions of the circuit breaker with the magnetic and thermal characteristics. The differential magneto-thermal switch present in the electrical system integrates three different protections: the magnetic one for short circuits that can put an entire building at risk with the risk of fire; the thermal one for overloads in the supply of electricity (for example more than one household appliance in operation); the differential one typical of the lifesaver which protects the subject from a current dispersion. The AC type differential switch tripping is ensured for differential sinusoidal alternating currents applied suddenly or slowly increasing (CEI EN 61008-1). Characteristics: Eaton series Rated insulation voltage 240 Vac Current In 25A Breaking capacity Icn 4.5kA Tripping curve C Differential tripping characteristic AC Rated residual current 30 mA 2 modules 1P+N Rated frequency 50 Hz Mounting depth 69.5 mm Degree IP20 protection