Description
Blue Sea 5056 Water Resistant Fuse Block | Boat Supply Store
Address critical circuit protection needs in wet marine environments with this compact, water-resistant fuse block. It supports up to 80A total input with individual circuits rated at 25A, operating at a maximum of 32V DC. This unit is engineered to withstand demanding conditions, making it ideal for installations on offshore fishing vessels or coastal cruisers where moisture ingress is a significant concern.
Key Features
- Water-resistant design safeguards circuits in harsh marine conditions
- Compact footprint with single-side nesting optimizes space utilization
- Accepts ATO/ATC blade fuses and low-profile circuit breakers for versatility
- Tin-plated copper busses and fuse clips ensure superior corrosion resistance
- Insulating cover meets stringent ABYC and USCG requirements for safety
- Includes three wire plugs to maintain water resistance for fewer than four loads
- Spare fuse and fastener storage integrated into the cover for convenience
- Four write-on circuit labels facilitate clear system identification
Specifications
| Product Specifications | |
|---|---|
| Maximum Amperage per Block | 80A |
| Maximum Amperage per Circuit | 25A |
| Maximum Voltage | 32V DC |
| Bus Material | Tin-plated copper |
| Terminal Type | #8-32 screw terminals |
| Input Wire Gauge | 8 AWG to 4 AWG |
| Load Wire Gauge | 16 AWG to 10 AWG |
| Fuse Type Accepted | ATO and ATC fast-acting blade fuses, ATO/ATC-Style Low Profile Circuit Breakers |
| Water Resistance | Yes |
| Nesting Capability | Yes |
| Cover Included | Yes |
Who This Is For
Boaters and RV owners who require dependable, water-resistant circuit protection in challenging environments. Ideal for those needing to safeguard DC electrical systems where exposure to moisture is a factor.
How It Compares
| Feature | Blue Sea 5056 Water Resistant Fuse Block | Blue Sea Systems |
|---|---|---|
| Number of Circuits | 4 | 6 |
| Number of Circuits | 4 | 12 |
| Amperage per Circuit | 25A | 20A |
| Amperage per Circuit | 25A | 20A |
| Amperage per Block | 80A | 80A |
| Amperage per Block | 80A | 100A |
| Water Resistance | Yes | Yes |
| Water Resistance | Yes | Yes |
| Nesting Capability | Yes | Yes |
| Nesting Capability | Yes | Yes |
Common Concerns Answered
I need more than 4 circuits. What are my options?
While the Blue Sea 5056 offers a compact 4-circuit solution, larger systems may benefit from its sister products like the 6-circuit (5025) or 12-circuit (5026) ST Blade Fuse Blocks, which also feature water resistance and nesting capabilities.
Will thick gauge input wires be difficult to connect?
The fuse block accepts input wires from 8 AWG to 4 AWG. Ensure your wire termination method is appropriate for the selected gauge; spade terminals or ring terminals crimped securely onto the wire are recommended for optimal connection to the #8-32 screw terminals.
Is this fuse block worth the cost if my application isn't constantly wet?
The Blue Sea 5056 is specifically engineered for environments where water resistance is paramount, providing long-term reliability against corrosion and shorts. While a non-water-resistant option might have a lower initial cost, the durability and protection offered in marine settings justify the investment for critical systems.
Frequently Asked Questions
What type of fuses does the Blue Sea 5056 ST-Blade Water Resistant Fuse Block accept?
The Blue Sea 5056 accepts ATO and ATC fast-acting blade fuses, as well as ATO/ATC-Style Low Profile Circuit Breakers.
What is the maximum amperage rating for this fuse block?
The maximum amperage rating for the entire fuse block is 80A. Each individual circuit is rated for a maximum of 25A.
Can this fuse block be used in wet or exposed environments?
Yes, this fuse block features a water-resistant design specifically intended for protection in marine environments and other demanding conditions where moisture exposure is a concern.
What wire sizes are compatible with the input and load terminals?
The input terminals accept wire sizes ranging from 8 AWG to 4 AWG, while the load terminals are compatible with wire sizes from 16 AWG to 10 AWG.
Does the fuse block come with a cover?
Yes, the Blue Sea 5056 ST-Blade Water Resistant Fuse Block includes an insulating cover that meets ABYC/USCG insulation requirements.
