The PSR030FS0050Z is a 50A, 700V, Size 30 Flush End In. Thread specialty fuse manufactured by Littelfuse. It is designed to provide protection from surge currents, overvoltage, overtemperature, and other causes of electrical circuit damage. This fuse has an interrupt rating of 200kA (200,000 Amps), a nominal current rating of 50A, and a voltage rating of 700V. The terminal threads measure 1/2" in diameter. This fuse has a flush end throughout its length, allowing easy installation into existing equipment. The fuse is single pole, and is ideal for commercial or industrial applications where overcurrent protection is necessary.