Type B Triple Pole 10kA - System pro M Compact Type B characteristic offers instantaneous short circuit response level of 3-5 x normal rated current, making it suitable for circuits with moderate inrush currents such as filament lamps, heating loads and most domestic/small building protection applications. DIN rail mounting Complies with BS EN 60898 Operating temperature range of -25°C to +55°C Standard 52.5mm width Max. operating voltage 440Vac 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. Standards BS EN 60898