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 | Tin-plated copper buses resist corrosion, clear cover with spare fuse storage, up to 30A per ATO or ATC fused branch

Product ID: 2567080

Details

Brand
Blue Sea
Color
With cover
Connector Type
Screw
Current Rating
100 A
Material
Tinned Copper
Mounting Type
screw mount

⚡100A max capacity for high-demand systems

🔋12 fused circuits for organized power

🛡️Tin-plated copper resists corrosion

13853 som

Duties & taxes included

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Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power up like a pro — fuse block mastery for the modern millennial manager!

MARINE GRADE DURABILITY - Tin-plated copper buses and clips ensure long-lasting corrosion resistance in harsh environments.
ROBUST 100 AMP CAPACITY - Handles up to 100 amps total and 30 amps per circuit, perfect for demanding DC setups.
SMART SAFETY CONVENIENCE - Clear insulating cover with push-button latch protects terminals and stores spare fuses on board.
STREAMLINED POWER MANAGEMENT - Supports 12 ATO/ATC fused circuits with integrated ground bus for clutter-free wiring.
EFFORTLESS INSTALLATION MAINTENANCE - Accepts ring or snap fork terminals with recessed labels for quick circuit ID and troubleshooting.

The Blue Sea Systems 5026 ST Blade Fuse Block is a premium 12-circuit DC fuse panel designed for professional-grade power distribution in boats, RVs, and custom vehicles. Rated for 100 amps total and 30 amps per circuit, it features corrosion-resistant tin-plated copper buses, a clear protective cover with spare fuse storage, and an integrated negative bus for streamlined grounding. Engineered for durability and ease of use, it simplifies complex electrical setups while ensuring reliable, safe power management.

Specifications

ASIN	B001P6FTHC
Best Sellers Rank	#1,316 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 A
Customer Reviews	4.8 4.8 out of 5 stars (6,772)
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 kg
Manufacturer	Blue Sea Systems
Material Type	Tinned 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 Count
Voltage	12 volts_of_direct_current

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