What is the total amp max for the bus? Is it 180 amps (6*30) or can you only use a few 30 amp circuits.

100 amps per block, 30 amps per circuit. This is from the manufacturer's website.

Does this fuse block utilize a single power line in to feed the 6 circuits?

Yes, a single source feeds all 6. There is also a single ground source for the 6 ground connections.

What's the difference between the one with split, and the one without?

Split:It provides two isolated groups of circuits. For example if you have one group of circuits that you want to come on when the ignition switch is turned on. And a separate group of circuits that will stay on even if the ignition is off. A good example for this is if you have a clock on board you would want it to stay on. See manufacturer video: https://www.bluesea.com/resources/616/ST_Split_Bus_Fuse_Block

do I need a terminal block in conjunction with this or just wire this to my battery and run everything off of this its going in a enclosed trailer to run lights and a inverter .my winch I figure would be direct to the battery right ?

You can certainly connect it directly to the battery; however that connection needs to be fused appropriately. Also, "the winch" you referenced may be an issue since the auxiliary fuse panel is only rated for 100 amps. If you wire directly to the battery I would ensure that you have an inline 100 amp fuse close to your battery. I installed mine with a reset-able breaker (100 amp) between the battery and the fuse panel.

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Blue Sea - Systems Fuse Block Ato 6 Circuit With Ground

Blue Sea - Systems Fuse Block Ato 6 Circuit With Ground

Product ID: 55009577

Details

Brand
Blue Sea
Colour
With cover
Connector type
Clamp
Current rating
100 Amps
Material
Plastic
Mounting type
Wall Mount

⚡100A max block current

🔌6 fused circuits

🛡️ABYC/USCG safety certified

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Description

🛠️ Fuse your circuits with confidence — power, protection, and precision in one sleek block!

BUILT TO LAST - Durable plastic housing with a clear insulating cover meets marine-grade ABYC/USCG standards.
ALL IN ONE GROUNDING - Integrated negative bus and positive distribution stud simplify wiring and reduce clutter.
POWERHOUSE PROTECTION - Handles up to 100A per block and 30A per circuit for robust electrical safety.
EFFORTLESS INSTALLATION - Wall mount design with #8-32 captive star lock screws and torque specs for secure setup.
STREAMLINED CIRCUIT CONTROL - Six fused circuits with clear labeling and write-on tags for effortless management.

The Blue Sea Systems Fuse Block ATO 6 Circuit with Ground (model 5025) is a premium, marine-grade fuse block designed for up to 100A per block and 30A per circuit at 32V DC. Featuring six fused circuits, a built-in negative bus, and a clear insulating cover compliant with ABYC/USCG standards, it ensures reliable, safe, and organized power distribution for boats and vehicles. Its robust construction, easy mounting, and included write-on labels make it the go-to choice for professionals demanding durability and peace of mind.

Specifications

ASIN	B000THQ0CQ
Best Sellers Rank	169,638 in DIY & Tools ( See Top 100 in DIY & Tools ) 694 in Fuses & Holders
Brand	Blue Sea Systems
Centerline Length	3.32 Inches
Colour	With cover
Connector Type	Clamp
Current Rating	100 Amps
Customer Reviews	4.8 4.8 out of 5 stars (2,540)
Global Trade Identification Number	00632085050252
Included Components	Blue Sea Systems 5025-BSS ST Blade Fuse Block - 6 Circuits with Negative Bus and Cover
Item Dimensions W x H	10.2W x 5.1H centimetres
Item Type Name	Blue Sea Systems 5025-BSS ST Blade Fuse Block - 6 Circuits with Negative Bus and Cover
Item Weight	0.55 Pounds
Manufacturer	Blue Sea Systems
Manufacturer Part Number	5025-BSS
Material	Plastic
Model Number	5025
Mounting Type	Wall Mount
Number Of Contacts	6
Number Of Poles	6
Number of Positions	6
Specification Met	ABYC/USCG
Temperature Range	1.3E+2 Degrees Celsius
UPC	632085050252
Unit Count	1.0 count
Upper Temperature Rating	130 Degrees Celsius
Voltage	32 Volts (DC)

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