Single-Pole Fuse Base (Fuse Holder) for blade-type NH fuses, specifically designed for Size NH-4 fuses, Fuse Size Compatibility: NH Size 4 (HPC4), Rated Current: 1250 A (Amperes), Rated Voltage: 690 V AC (Volts Alternating Current), Mounting: Screw fixing on a mounting plate (not DIN rail)