Littelfuse
Littelfuse SLC025 25A 480VAC Class G Time Delay Fuse
A 25 A, 480 V AC Class G time-delay fuse with a 100 kA interrupt rating at 480 V AC and 10 kA at 170 V DC
- 25 A rating protects 480 V AC circuits
- 100 kA interrupt rating clears heavy faults safely
- Class G rejection design prevents wrong fuse fit
- UL 248-5 and CSA certified for code compliance
- Time-delay action rides through motor start surges
Application & Rating
The Littelfuse SLC025 is a 25A, 480VAC Class G time-delay fuse built for industrial and commercial electrical systems. It handles 170V DC and carries a 100kA interrupt rating at 480VAC plus 10kA at 170V DC. The cylindrical rejection-style body fits GFB series fuse blocks. This component suits maintenance engineers and panel builders protecting motors, transformers and control circuits.
Replacement Guidance
The fuse cross-references Bussmann SC, Mersen AG and Littelfuse SLC series equivalents, simplifying stock consolidation. Its Class G dimensions and rejection feature prevent incorrect installation in circuits requiring different time-current characteristics. The jump is worth it when a facility standardises on UL 248-5 Class G protection and needs verified 100kA breaking capacity at 480VAC.
Suitability & Limits
This fuse suits installers who need a non-indicating, single-element device with CE, CSA and QPL-W-F-1814 compliance. It is not for buyers who require visual blown-fuse indication or a smaller physical footprint than the 1-5/8 in length and 13/32 in diameter. Teams needing faster clearing times or different voltage ratings should look at other classes.
Highlights
- 25 A rating protects 480 V AC circuits
- 100 kA interrupt rating clears heavy faults safely
- Class G rejection design prevents wrong fuse fit
- UL 248-5 and CSA certified for code compliance
- Time-delay action rides through motor start surges
Specifications
| Brand | Littelfuse |
|---|
Questions about this item
What fuse block series fits the 1-5/8 in by 13/32 in rejection-style body?
The fuse uses a Class G rejection body that matches the GFB fuse block series; the rejection feature prevents insertion of lower-rated fuses.
How do I install this time-delay fuse without damaging the melamine cylinder?
Align the rejection tab with the block slot, press straight in until the caps seat fully, and avoid twisting the 13/32 in diameter body during insertion.
When should I replace this 25 A fuse after a fault event?
Replace the fuse after any interruption because the single-element design sacrifices itself to clear the fault; the non-indicating body gives no visual confirmation of operation.
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