AC Surge protective device

AC-SPD10 440V / 10KA / 2 pole = 360.00
AC-SPD20 440V / 20KA / 2 pole = 430.00
AC-SPD30 440V / 30KA / 2 pole = 500.00
AC-SPD40 440V / 40KA / 2 pole = 640.00
AC-SPD60 440V / 60KA / 2 pole = 920.00