coThe 004744223 Fuse with aR designation, manufactured by ETI Polamco, is a 400 Amp rated, 690VAC, NH2 type power interrupting component with a ceramic body, high interrupting rating, and following UL and CSA safety standards. It is designed for use in a wide range of low-voltage industrial, commercial, and residential applications where over current protection is required. It is capable of interrupting both DC and AC current up to 400 Amp and 690VAC.