9998SL-25, 2 pole contact kit, rated for 540 amp, 600 volt max, suitable for NEMA size 6 motor starters and contactors, suitable with Class 9998 model types 8502SH, 8536SH, 8538SH, 8539SH, 8547SH, 8549SH, 8606SH, 8630SH, 8640SH, 8647SH, 8702SH, 8736SH, 8738SH, 8739SH, 8810SH, 8811SH, 8812SH, 8940SH, complete assembly kit includes all contacts and related mounting screws and hardware, direct substitute for OEM 9998SL-25