What size ring connector is needed to attach wire to terminals?

They are #8 as described in the description. Hard to find #8 rings in heat shrink connectors. #10 worked just fine for the terms and it seems all manufacturers sell this size.

Can I run +/- from batt to 100 amp breaker then +/- to fuse box so I can kill power to fuse box?

Yes you can. The fuse box will be powered off breaker. I used a toggle switch panel instead of a main breaker.

Product page says this can handle 100 amps per block, does that mean 100 amps on the left 6, and another 100 on the right?

No, it means 100a peak draw for the entire block...30a peak per circuit. The main positive in should be fused at 125 per the specs from BlueSea.

Does this block come with a positive and a negative bus? I don't want to have to daisy chain the positive lead to each lead on the panel...

Yes, it does indeed come with both a positive (fused) bus and a negative bus. Very nice unit, as with all Blue Sea products. I would and have bought again after purchasing mine.

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Blue Sea Systems ST Blade Fuse Block 12 Circuit with Ground and Cover, 100 Amps, 5026

Product ID: 2567080

Details

Brand
Blue Sea
Color
With cover
Connector Type
Screw
Current Rating
100 Amps
Material
Polycarbonate
Mounting Type
screw mount

🔋100A max current rating

🔌12 circuit capacity

🛡️Tin-plated copper buses for durability

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฿4575

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Fuse your circuits with confidence—where power meets precision!

PREMIUM CONDUCTIVITY - Tin-plated copper buses and fuse clips deliver superior corrosion resistance and reliable power distribution.
POWERHOUSE PROTECTION - Safeguard up to 12 circuits with a robust 100A rating, ensuring your gear stays shock-proof and fire-safe.
COMPACT COMMAND CENTER - Sleek, space-saving design fits tight spots—perfect for modern setups demanding efficiency without bulk.
PLUG PLAY VERSATILITY - Compatible with ATO/ATC fuses (1-40A), ideal for everything from truck builds to marine electronics—future-proof your power.
EFFORTLESS ACCESS SAFETY - Push-button latch cover meets ABYC/USCG insulation standards, with built-in fuse storage and clear labeling for quick maintenance.

The Blue Sea Systems 5026 ST Blade Fuse Block is a professional-grade 12-circuit fuse block rated for 100 amps, designed to consolidate and protect electrical circuits efficiently. Featuring tin-plated copper buses, a secure push-button cover compliant with marine safety standards, and compatibility with ATO/ATC fuses from 1 to 40 amps, it offers a compact, durable solution for managing power distribution in tight spaces. Trusted by pros for its reliability and ease of installation, it’s the go-to choice for automotive, marine, and industrial electrical setups.

Specifications

ASIN	B001P6FTHC
Best Sellers Rank	#1,040 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Fuse Blocks (Tools & Home Improvement) #1 in Fuse Blocks (Industrial & Scientific)
Brand Name	Blue Sea Systems
Color	With cover
Connector Type	Screw
Current Rating	100 Amps
Customer Reviews	4.8 out of 5 stars 6,808 Reviews
Global Trade Identification Number	00632085050269
Included Components	Fuse Block, Cover, 20 write on circuit labels
Item Dimensions W x H	3.31"W x 1.5"H
Item Type Name	boating-electrical-equipment
Item Weight	0.1 Kilograms
Manufacturer	Blue Sea Systems
Material	Polycarbonate (PC), Tinned plated copper
Material Type	Polycarbonate (PC), Tinned plated copper
Model	5026
Mounting Type	screw mount
Number Of Contacts	12
Number Of Poles	24
Number of Positions	12
Part Number	5026-BSS
Specification Met	ISO 9000, SAE
UPC	632085050269
Unit Count	1.0 Count
Voltage	32 Volts (DC)

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