Type K Single Pole 6kA - Classic Type K characteristics have been specifically designed for the protection of motor control circuits and items used within them. It has a very sensitive thermal curve, combined with a magnetic setting of 8 times the normal input current (In), which is high enough to avoid in-rush nuisance tripping, but provides good protection against over current conditions. DIN rail mounting Complies with BS EN 60898 Operating temperature range of -25°C to +55°C Standard 17.5mm width Max. operating voltage: 440Vac, 60Vdc Note The Classic & System pro M product cannot be intermixed and do not share common accessories. System pro M products can only be fitted to new style Protecta distribution boards. Standards IEC/EN60947-2 ABB System Pro M Single & Double Pole MCB's Note The Classic & System pro M product cannot be intermixed and do not share common accessories. System pro M products can only be fitted to new style Protecta distribution boards,see typically stock no. 539-1553.