Bussmann KTS-400 Limitron Fast Acting Fuse 600V

The Bussmann Limitron KTS-R-400 fast-acting fuse is a 400 A, 600 V current-limiting RK1 fuse, designed for high-current protection in panelboards and feeders within commercial and industrial power systems. This blade-end device measures 2.00 in diameter by 11.63 in length, uses a single-element melamine glass body, and employs a rejection-style design for secure mounting in RK1 fuse holders, with blade-end connection and a blade terminal configuration. It delivers a 200 kAIC interrupt rating at 600 VAC and is UL 248-12 listed with CSA/CE recognition as part of the Limitron family. With a weight around 2.4 lb and compatibility for 600 V circuits, the KTS-R-400 is suited for fast-acting protection of feeders and branch circuits in commercial electrical distributions. The 400 A rating aligns with high-current branch circuits; the 200 kAIC interrupt rating at 600 VAC ensures fast fault interruption, while the Limitron line's current-limiting behavior helps manage let-through in short-circuit conditions.