The Siemens Circuit Breaker is high quality! Miniature circuit breaker 400 V 15kA, 2-pole, C, 0.5 A Model product brand name SENTRON product designation Miniature circuit breaker General technical data number of poles 2 number of poles / note 2P tripping characteristic class C mechanical service life (switching cycles) / typical 10 000 circuit-breaker / Design 5SY7CC overvoltage category III degree of pollution 3 Voltage insulation voltage with single-phase operation / at AC / rated value 440 V with multi-phase operation / at AC / rated value 440 V Supply voltage type of voltage AC operational current / at AC / rated value 0.5 A supply voltage / at AC / rated value 400 V operating voltage at DC / rated value / maximum 72 V supply voltage frequency rated value 50/60 Hz Protection class protection class IP IP20, with connected conductors Switching capacity switching capacity current acc. to IEC 60947-2 / rated value 50 kA Dissipation power loss W / for rated value of the current / at AC / in hot operating state / per pole 1.1 W Current Tripping residual / rated value / derated current / at 40 Cel 0.44 A suitability for operation Mechanical engineering / industry