Bussmann KLU-1000 Fuse

The Bussmann KLU-1000 Limitron Class L time-delay fuse is a high-current, current-limiting cartridge fuse built for demanding industrial power distribution. Rated at 1000 A and 600 V AC, it delivers a 200 kA RMS symmetric interrupt rating to protect large switchboards, panelboards, and machinery disconnects from catastrophic faults while tolerating short surges inherent to heavy machinery loads. This bolt-on, non-indicating fuse features a fiberglass/melamine body and measures about 2-1/2 inches in diameter and 10-3/4 inches in length, designed for rugged, long-life service in commercial and industrial environments. It is UL Listed (UL 248-10, Class L) and CSA certified, signaling conformance to stringent safety standards, with compatible Bussmann fuse blocks such as 51215 and 51235 to integrate into existing protection schemes. The KLU-1000 is part of the Limitron family—time-delay, fast-acting protection that helps prevent nuisance outages on circuits prone to brief overcurrents, while reliably interrupting faults when they occur. This makes it suitable for large distribution feeders, power distribution centers, and heavy equipment disconnects where a 600 V class L fuse with a 1000 A rating is required for safe, effective overcurrent protection.