
Flexibility and Savings with Mersen's Class J Fused Switch
UL 98 Listed Fused Disconnect Switch
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Mersen’s FS Series UL 98 Listed fused disconnect switch is designed for branch circuit protection using ANY UL Listed Class J fuse. Engineered for performance and convenience, the FS Series delivers the high interrupting capacity of Class J fuses (200kA SCCR) in the same footprint of a fuse holder.
Occupying less space than a standard fuse holder and traditional disconnect switch combination, it enables more streamlined panel designs, ease of installation, and improved off-the-shelf distribution availability when time and convenience matter most, making it an ideal choice for panel builders.
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Available in 30A and 60A versions, the FS Series Class J Fused Switch includes lockout/tagout (LOTO) capability and integrated LED fuse status indication and comes with an IP20 rating. It features a smaller footprint compared to a traditional Class J disconnect with a max interrupting rating of 200kA. The Class J Fused Switch is UL 98 listed and suitable for use as a main/feeder device.
Designed to accept ALL standard 30 and 60A Class J fuses, Mersen’s Class J Fused Switch gives Panel builders flexibility in fuse manufacturer selection and an all-important space saving option when compared to standard fused disconnects.
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Cost-Saving Benefits
The cost-saving benefits of the Mersen Class J Fused Switch include:
- Smaller, less expensive enclosure or additional component space for panel builders
- Fewer Components = Less Cost
- Less total cost than switches and fuse holders
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Resources
Product data sheets
June 25, 2025
DS-Class-J-Fused-Switch-Mersen-ENpdf - 538.49 KB
Brochures and Flyers
June 25, 2025
BR-UL-508A-Panel-Shops-Mersen-ENpdf - 10.95 MB
Brochures and Flyers
June 25, 2025
FL-UL-508A-Panel-Mersen-ENpdf - 2.66 MB
Brochures and Flyers
June 25, 2025
BR-Space-Saving-Brochure-Mersen-ENpdf - 4.89 MB
Brochures and Flyers
June 25, 2025
FL-Data-Centers-Mersen-ENpdf - 3.21 MB
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