546A300G010, 4 pole contact kit, rated for 18 amp, 600 volt max, suitable for NEMA size 0 motor starters and contactors, suitable with 200 and 300 Line model types CR105, CR109, CR106, CR205, CR206, CR209, CR305B, CR306B, CR309B, complete assembly kit includes all contacts and related mounting screws and hardware, direct substitute for OEM 546A300G010