For a 400 amp fuse requirement, Littelfuse RLS400 provides 600V AC protection with renewable characteristics for feeder circuits, branch circuit protection and general purpose.
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In the RLS Series family, Littelfuse RLS400 delivers 400A protection with a 600V AC rating. Physical configuration is Class H (295.3 × 63.5mm), with blade terminals and 10kA AC interrupting capability. Applications include feeder circuits, branch circuit protection and general purpose; verify installation requirements against UL 248-6 and the listed UL Listed and CSA approvals. The manufacturer states that renewable Class H fuses should not be selected for new applications; verify short-circuit conditions and replacement practices in the datasheet.
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