Part IDSR.300 is a 0.3A member of the Littelfuse IDSR Series with a 600V AC / 600V DC rating. Its Class RK5 indicating fuse design is paired with 200kA AC interrupting capability. Visual blown-fuse indication is part of the series design. Refer to the official datasheet for final coordination.
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IDSR.300 is Littelfuse’s 0.3A configuration in the IDSR Series, built as a Indicating Dual-Element Time-Delay Class RK5 Fuse for 600V AC / 600V DC service. Its cartridge / clip format uses ferrule / blade (amp-dependent) terminals, while the listed primary interrupting capability is 200kA AC. Published dimensions for this rating/configuration are 127.0mm length; 20.7mm max body diameter. The indicating design also supports 600V DC circuits. Applications include DC circuits, Solar Inverters, Motor, Transformer, Solenoid. Confirm final suitability with the official datasheet and UL 248-12.
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4A · 65 V AC/DC
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3.15A · 65 V AC/DC
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2.5A · 65 V AC/DC
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2A · 65 V AC/DC
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1.6A · 65 V AC/DC
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1.25A · 65 V AC/DC
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1A · 65 V AC/DC
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0.8A · 65 V AC/DC