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⚡ Fuse your circuits with confidence — power meets precision!
The Blue Sea Systems MRBF Surface and Terminal Mount Fuse Blocks deliver high-amperage DC circuit protection up to 58V and 300A per block. Designed for durability and weather resistance, these compact fuse blocks feature dual fuse positions (30A-300A), insulating caps to prevent shorts, and ignition protection when used with MRBF fuses. Ideal for marine, battery, and inverter applications, they combine rugged reliability with versatile installation options.



| ASIN | B002INJXO6 |
| Best Sellers Rank | #109,828 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #237 in Fuses & Holders |
| Brand Name | Blue Sea Systems |
| Color | Double Fuse |
| Colour | Double Fuse |
| Connector Type | Screw |
| Connector type | Screw |
| Current Rating | 300 Amps |
| Current rating | 300 Amps |
| Customer Reviews | 4.6 out of 5 stars 267 Reviews |
| Global Trade Identification Number | 00632085021511 |
| Included Components | Blue Sea Systems 2151-BSS Dual MRBF Terminal Fuse Block - 30 to 300A |
| Item Dimensions W x H | 6.4W x 8.9H centimeters |
| Item Type Name | Blue Sea Systems 2151-BSS Dual MRBF Terminal Fuse Block - 30 to 300A |
| Item Weight | 4.8 Ounces |
| Manufacturer | Blue Sea Systems |
| Material | Plastic |
| Material Type | Plastic |
| Model | 2151 |
| Mounting Type | 3/8 inch threaded mount |
| Mounting type | 3/8 inch threaded mount |
| Number Of Contacts | 2 |
| Number Of Poles | 2 |
| Number of Items | 1 |
| Number of Positions | 2 |
| Number of contacts | 2 |
| Part Number | 2151 |
| Specification Met | Unspecified Standards Meet |
| UPC | 632085021511 |
| Unit Count | 1 Count |
| Voltage | 58 Volts (DC) |
R**Y
Durable, strong, lots of use cases for all batteries above 100 Ah
Great product. These are a good value, easy to install, and a convenient size for the post of nearly all LFP batteries. They're also built like a tank, and therefore suitable for a wide range of use cases. I fuse all of my LFP batteries I find it useful to have two fuses on the block for larger batteries (200 and 300 Ah) because they often run circuits with higher and lower current drain, so I want separate fault protection for the distribution blocks on those circuits. Note: I use only Buss fuses because I don't trust low-cost knock-offs to blow at their rated current based on testing and research I have seen.
Y**N
Bon achat
Produit de qualité
P**K
Way too expensive for what it is...
Ridiculously expensive. Well made product but you have to question the cost. Quality costs... unless you're being ripped off!
P**1
Schlanke Installation
Sehr gutes Produkt, ermöglicht eine schlanke Elektroinstallation mit dem Nachteil, daß die Sicherungen ihren Preis haben. Für mich aber trotzdem angenehmer, als eine extra MEGAfuse-Box plus Kabel einzubauen.
A**E
Dubbio sull’originalità del prodotto.
Arrivato in una bustina trasparente anonima. Non posso escludere che si tratti di merce non originale Blue Sea System
Trustpilot
1 month ago
1 day ago