![Blue Sea 5031 ST Blade Fuse Block w/o Cover - 12 Circuit w/Negative Bus [5031]](http://shop.lotzoutdoors.com/cdn/shop/files/20432XL.webp?v=1746999774&width=1500)
Blue Sea 5031 ST Blade Fuse Block w/o Cover - 12 Circuit w/Negative Bus [5031]
- Regular price
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$64.79 - Regular price
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$85.99 - Sale price
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$64.79
SKU: CWR-20432 UPC: 632085050313
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This open ST Blade fuse block accepts ATO and ATC fast-acting blade fuses and provides a common positive distribution bus for organized circuit protection. Tin-plated copper buses and fuse clips support up to 30A per circuit. The 100A-per-block capacity and 32V DC rating suit compatible low-voltage installations where a cover isn’t required.
- 12 circuit positions organize multiple branch circuits in one compact distribution point.
- Accepts ATO and ATC fast-acting blade fuses for broad fuse compatibility.
- Tin-plated copper buses and fuse clips support up to 30A per circuit.
- Integrated negative bus provides a centralized connection point for DC return wiring.
- Positive and negative #10-32 studs accommodate ring or snap-fork terminals.
- Surface mounting with #8 screws (M4) supports a secure installation on compatible panels.
The Blue Sea Systems 5031 consolidates branch circuits that would otherwise require separate inline fuse holders, helping keep marine, RV, and automotive wiring more organized. Each circuit accepts an ATO or ATC fast-acting blade fuse, while the shared positive distribution bus feeds the circuit positions from a common source.
The integrated negative bus provides a dedicated return connection for the connected DC loads, reducing the need for separate negative connection points. Tin-plated copper buses and fuse clips provide the specified 30A-per-circuit capability, with a 100A maximum rating for the complete block.
Use it in compatible systems rated up to 32V DC, including accessory panels, vehicle electrical circuits, and boat or RV branch-circuit installations. This version is supplied without a cover, and fuses are sold separately.
| Brand | Blue Sea Systems |
|---|---|
| Model | 5031 |
| SKU | CWR-20432 |
| UPC | 632085050313 |
| Product type | Fuse block |
| Fuse type | ATO/ATC fast-acting blade fuses |
| Circuits | 12 |
| Negative bus | Yes |
| Maximum amperage | 100A per block; 30A per circuit |
| Maximum voltage | 32V DC |
| Bus material | Tin-plated copper |
| Mounting | #8 screw (M4) |
| Weight | 0.65 lb |
| Cover | Not included |
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Which fuses does this block accept?
It accepts ATO and ATC fast-acting blade fuses. -
How many circuits does it support?
The block provides 12 circuit positions. -
Does it include a negative bus?
Yes. An integrated negative bus provides a centralized return connection for compatible DC circuits. -
What are its electrical ratings?
The maximum rating is 100A per block and 30A per circuit at up to 32V DC. -
Is a cover or fuse kit included?
No. This model is supplied without a cover, and fuses are sold separately.
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⚠️ California Proposition 65 Warning
⚠️ WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
This may include but is not limited to:
- Lead and lead compounds
- Nickel and nickel compounds
- Phthalates (DEHP, DBP, BBP, etc.)
- Bisphenol A (BPA)
- Cadmium and cadmium compounds
For more information go to www.P65Warnings.ca.gov
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![Blue Sea 5031 ST Blade Fuse Block w/o Cover - 12 Circuit w/Negative Bus [5031]](http://shop.lotzoutdoors.com/cdn/shop/files/20432XL.webp?v=1746999774&width=3000)
