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Description
MRF2913-40 MARINE FUSE CERAMICCross References Brand Manufacturer Part Number Bussmann MRBF 40, BK MRBF 40 CTO USA (Main Product) MRF2913 40 Littelfuse 0581040, 581040, 0581040. X Technical Specifications Feature Details Value Product Name Marine Rated Battery Fuse (MRBF) Ceramic Cube Fuse Product Code MRF2913 40 Amperage Rating 40 Amps (40A) Maximum Voltage Rating 58V DC Fuse Body Material Heavy Duty Weatherproof Ceramic Housing Terminal Material Tin Plated Copper Alloy Core
Cross References
| Brand / Manufacturer | Part Number |
|---|---|
| Bussmann | MRBF-40, BK/MRBF-40 |
| CTO USA (Main Product) | MRF2913-40 |
| Littelfuse | 0581040, 581040, 0581040.X |
Technical Specifications
| Feature | Details / Value |
|---|---|
| Product Name | Marine Rated Battery Fuse (MRBF) / Ceramic Cube Fuse |
| Product Code | MRF2913-40 |
| Amperage Rating | 40 Amps (40A) |
| Maximum Voltage Rating | 58V DC |
| Fuse Body Material | Heavy-Duty Weatherproof Ceramic Housing |
| Terminal Material | Tin-Plated Copper Alloy Core Elements |
| Product Group | Starters / Alternators / Electrical - Components - Fuses |
| Category | Marine Fuses |
| UPC Code | 402500980217 |
| Item Gross Weight | 0.062 lbs |
| Status | Active |
Applications & Compatibility Guide
| Category | Usage & Universal Compliance Guidelines |
|---|---|
| Recommended Use | • Specially engineered for space-constrained marine and heavy automotive electrical environments. Ideal for primary battery terminal branch protection, main alternator outputs, accessory wiring loops, electronics distribution blocks, and DC power input circuits. |
| Universal Compatibility | • Universally compatible with all standard single, dual, or triple post MRBF (Marine Rated Battery Fuse) terminal blocks and mounting bars. • Widely utilized in commercial watercraft, recreational yachts, off-grid solar battery banks, specialized fleet service trucks, RV electrical networks, and heavy-duty auxiliary power units. |
| Purpose & Function | • Acts as a critical high-amperage, fast-acting barrier directly at the battery source to prevent devastating wiring harness damage or localized thermal failure loops. • Features an ignition-protected design (complying with SAE J1171 standards) that isolates internal electrical arcs, making it entirely safe for installation within enclosed marine engine compartments and gasoline or diesel fuel environments. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Not to thick or thin well made
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
I bought pink so as not to lose when doing laundry with my daughter who steels all socks lol!
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Perfect
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
They were perfect
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Very Comfortable!
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
Very comfortable. Don’t slip off back of heal. Love the colors.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
😊
Size: Medium, Color: (601) Bittersweet Pink / Stone / Stone
These are really nice except I don’t like all the colors of them so I’m getting different ones same company just different colors. I don’t like the thick ones these are perfect.. 🤩
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Reviewed in the United States on February 24, 2026
★★★★★ 3
Pretty Colors to Encourage Me to Walk!
Size: X-Large, Color: (601) Bittersweet Pink / Stone / Stone
Hum. Extra large does not seem extra large. I have a slender but size 10-10.5 foot. Will keep but was hoping for a looser fit. Bought to match an Under Armour walking outfit.
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Reviewed in the United States on May 16, 2026