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⚡ Fuse your circuits with confidence — compact power, marine tough!
Blue Sea Systems MRBF Terminal Fuse Blocks deliver high-amperage DC circuit protection up to 300A and 58V, designed with a compact, stackable stud layout and weatherproof construction. Ideal for marine and harsh environment applications, these fuse blocks feature insulating caps to prevent shorts and are ignition protected when used with MRBF fuses. Fuses sold separately.

| ASIN | B002INJXO6 |
| Best Sellers Rank | 124,123 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 410 in Deck Hardware |
| Brand | Blue Sea Systems |
| Colour | Double Fuse |
| Connector Type | Screw terminal |
| Connector type | Screw terminal |
| Country Of Origin | USA |
| Current Rating | 300 Amps |
| Current rating | 300 Amps |
| Customer Reviews | 4.6 out of 5 stars 268 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 centimetres |
| Item Highlight | Two fuse positions; 58V DC max; insulating cap; mounts to 3/8-inch stud; fuses sold separately |
| 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 |
| Manufacturer Part Number | 2151 |
| Material | Plastic |
| Model Number | 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 |
| Specification Met | Unspecified Standards Meet |
| UPC | 632085021511 |
| Unit Count | 1.0 count |
| Voltage | 58 Volts (DC) |
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!
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**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
F**R
Happy with purchase
Using these for an upgrade of my batteries for the travel trailer. They (and the associated Buss fuses you need to buy separately) are on the pricey side, but look robust. They're name brands (I have other Blue Sea components that came OEM with the trailer), so I'm confident they will stand the test of time and perform as needed.
Trustpilot
2 weeks ago
2 weeks ago