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Blue Sea MRBF 3 Circuit Independent Fuse Block
Blue Sea MRBF 3 Circuit Independent Fuse Block
Blue Sea Systems 5194 | Max 240A Per Circuit & 58V DC | Fuses Excluded
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$126.64
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DESCRIPTION
Consolidated High-Amperage Circuit Protection for Multi-Bank Systems
Managing multiple high-current DC circuits in confined spaces requires a reliable, space-saving distribution solution. The Blue Sea Systems 5194 MRBF 3-Circuit Independent Fuse Block provides consolidated overcurrent protection for three separate power circuits within a single, compact footprint. Specifically engineered to accept Marine Rated Battery Fuses (MRBF), this block eliminates the need to install three individual inline fuse holders, significantly reducing installation time and wiring clutter in complex electrical bays.
Unlike common-source fuse blocks that share a single positive feed, this unit features three completely isolated circuits. Each circuit has its own dedicated input and output stud, making it the ideal choice for protecting the individual outputs of a 3-bank battery charger, managing multiple獨立 battery banks (such as starter, house, and thruster batteries), or isolating heavy-duty DC loads across 12V, 24V, and 48V systems (up to a maximum of 58V DC).
Engineered for Harsh Marine and Off-Grid Environments
When working with high-amperage systems capable of delivering up to 240A per circuit, component quality is critical to preventing voltage drop, thermal buildup, and accidental short circuits. Standard, unbranded distribution blocks often use inferior metals that corrode or loosen under vibration. The Blue Sea Systems 5194 is built to rigorous marine standards, utilizing M8 (5/16"-18) stainless steel studs and one-piece stainless flange nuts to ensure secure, corrosion-resistant connections that maintain proper torque in high-vibration 4WD, caravan, and marine applications.
Safety is further enhanced by high-walled moulded insulating barriers that physically separate each circuit, preventing accidental bridging of terminals during installation or maintenance. When paired with MRBF fuses, the system is fully ignition protected, making it safe for installation aboard petrol-powered vessels or near battery enclosures.
Key Features and Benefits
- Three Independent Circuits: Provides isolated protection for three separate power sources or loads within one compact surface-mount module.
- High-Current Capacity: Supports MRBF fuses up to 240A per circuit at a maximum voltage of 58V DC, suitable for 12V, 24V, and 48V battery banks.
- ABYC/USCG Compliant Insulation: Includes a clip-on transparent insulating cover that prevents accidental contact while allowing easy visual inspection of fuse status.
- Versatile Cable Routing: Clever housing design allows all input and output cables to enter from a single side or opposing sides to suit tight installation layouts.
- Marine-Grade Hardware: Equipped with M8 (5/16"-18) stainless steel studs and one-piece flange nuts for reliable conductivity and corrosion resistance.
- Integrated Labelling: Features dedicated recesses that accept Blue Sea Systems Square Format labels for clear, professional circuit identification.
Streamlined Installation and System Integration
Designed for clean and logical wire management, the fuse block's housing includes breakout tabs that allow heavy-gauge cables to exit from a single side—a major advantage when mounting the block near a bulkhead, floor, or battery box edge. The unit mounts securely via pre-drilled holes suitable for M5 (Approx. #10) fasteners. For optimal performance and safety, always torque the terminal nuts to the recommended specification to prevent high-resistance connections.
Please note: MRBF fuses are sold separately, allowing you to select the exact amperage ratings required for each individual circuit in your system.
Upgrade Your DC Power Distribution
Equip your vessel, caravan, or off-grid power system with professional-grade overcurrent protection. Select the appropriate MRBF fuses for your cable gauges and add the 3-Circuit Independent Fuse Block to your setup today for a safer, cleaner electrical installation.
SKU: BS-5194B
SPECIFICATIONS
Specifications
| Part Number | 5194 |
|---|---|
| Block Type | Independent Source |
| Fuse Capacity | Three MRBF fuses |
| Ignition Protected | Yes |
| Maximum Amperage | 240 A per circuit |
| Maximum Voltage | 58 V DC |
| Mounting | Surface Mount M5 (#10) |
| Maximum Torque | 100 in-lb (11.3 N·m) |
| Terminal Stud Size | M8 (5/16"-18) |
| Weight | 1.20 lb (0.54 kg) |
| SKU: | BS-5194B |
| Package weight: | 0.648 kg |
| Package length: | 0.19 m |
| Package width: | 0.09 m |
| Package height: | 0.08 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
DOCUMENTS
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