Part KLLU650 is a 650A member of the Littelfuse KLLU Series with a 600V AC / 300V DC rating. Its Class L time-delay fuse design is paired with 200kA AC interrupting capability. Final selection should follow the published Littelfuse specifications.
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KLLU650 is Littelfuse’s 650A configuration in the KLLU Series, built as a Time-Delay Class L Current-Limiting Fuse for 600V AC / 300V DC service. Its blade format uses bolted blade terminals, while the listed primary interrupting capability is 200kA AC. Published dimensions for this rating/configuration are Class L bolted-blade frame; dimensions vary by ampere rating. Its high-current Class L construction is designed for coordinated power-distribution protection. It is intended for Service Switches, Switchboard Mains, Motor Control Center, Large Motor Branch Circuits, Circuit Breaker Protection. Validate the final circuit against UL 248-10, approvals and the official technical data.
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