... , sequence protection . NAKF111T SpecifictionsMain function:Temperature display, Refrigeration Control;Compressor overload, phase lack, sequence protection;Crankshaft heating;Provide ... running current display;Can install the cooling water pump (optional);With a tripping device with buzzer;emperature display range: -50° ... ,10.5KW (About 8Ph,10Ph,15Ph) Electric control box with a tripping device NAK111T