Bussmann JKS-300 Class J Current-Limiting Fuse

The Bussmann JKS-300 Limitron is a Class J fast-acting, current-limiting fuse with a 300 A rating designed for low-voltage circuits up to 600 V. It uses a single-element construction and provides a 200 kA interrupting rating at 600 VAC, aligning with the Limitron JKS family and a rejection-style form factor for panel and fuse-block installations. This Class J fuse is intended to protect wiring and equipment in industrial and commercial power-distribution applications where rapid fault-current interruption is required. Typical uses include safeguarding control circuits, power supplies, and other low-voltage branch circuits in electrical panels and equipment racks where precise, fast-acting protection is needed.