Can be used on 120vac

No, these are 12V DC fuse and fuse holders for automobile applications. The ratings are displayed in the details.

Why would you cover copper wire with Tin? You know different metals in an electrical circuit can spark right?

Tin is a base metal. You coat copper wires with tin for use in high moisture environments because the tin will help protect the copper wire from early onset of corrosion. You also tin small strand wires to hold them together to better make sure all the strands are making a connection for conducting the load. Look into marine wiring if you are curious about the prevalence of tinned wires.

Are all 4 red color ? Do they sell black too?

All the same color, more orange than red.

Will these work for 48v nominal (~55v upper voltage) systems?

They use 10 gauge stranded wire. 10 gauge (solid) is what folks use to wire electric water heaters and is rated at 600volts A.C. - 30 amps. I am looking at one I bought right now, and the wire IS marked 600 volts right on it. They can be used for 40 amp loads at lower voltages in my opinion since they ship with 40 amp fuse directly from the factory. So it seems that 45-55 volts would be of little concern as long as you keep the amperage under control. 120 volts @ 4 amps translates to 12volts @ 40 amps which is probably why they are equipped with 40 amp fuses from the factory. Obviously, you would use a lesser rated fuse at 45 VDC. Looks like about 10 amps or so to me.

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282PCS Standard and Mini

Product ID: 222009953

Details

AC Adapter Current
40 Amps
Brand
Qizpcer
Material
Copper Rubber
Mounting Type
Holder
Voltage
12 Volts

⚡Supports up to 40A current

💧Water-resistant sealed cap

🔌10 AWG heavy-duty wire

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COP 95911

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In stock

Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power up with confidence—fuse protection that never quits!

VALUE PACKED 4 PACK - Four fuse holders and fuses included, perfect for multiple upgrades or backups.
PLUG PLAY SIMPLICITY - Inline design allows effortless splicing into any 12V project—no fuss, just power.
WEATHERPROOF CONFIDENCE - Water-resistant cap seals out moisture, keeping your fuse holder safe in any environment.
ULTIMATE CIRCUIT PROTECTION - Includes 40 AMP ATC blade fuses that safeguard your vehicle or device with precision.
BUILT TO POWER YOUR PROJECTS - Heavy-duty 10 AWG wire ensures robust, reliable current flow for demanding applications.

The 10 Gauge Fuse Holder 4-pack features heavy-duty 10 AWG red wire inline holders with 40 AMP ATC blade fuses, designed for 12V systems. Each holder is water-resistant with a protective cap, ensuring durability and reliable circuit protection for automotive and electrical projects.

Specifications

AC Adapter Current	40 Amps
ASIN	B08BWRSPY1
Best Sellers Rank	#3,661 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1 in Fuse Holders
Brand	Qizpcer
Brand Name	Qizpcer
Current Rating	40 Amps
Customer Reviews	4.7 out of 5 stars 2,306 Reviews
Global Trade Identification Number	00738631721604
Manufacturer	Qizpcer
Material	Copper, Rubber
Material Type	Copper, Rubber
Maximum Current	40 Amps
Model	BXSZ-4
Mounting Type	Holder
Part Number	BXSZ-4
UPC	738631721604 073863172160
Unit Count	4 Count
Voltage	12 Volts

Reviews

D**D

heavy duty and well made

Worked great for me, was impressed by how heavy duty it seemed. I've bought cheap electrical parts that are clearly a lesser gauge than advertised here but this really does seem like it's 10 AWG or very close. Fuses are included but I didn't see them initially as they are dark purple (is that the standard color code for 40A?) and hidden down under a flap of the box. They were there I just didn't see them at first.

20.04.2026

M**W

Good automotive blade fuse recepticle to protect from solar overcurrent.

All four pass continuity with fuses installed with negligible impedence. Installed MC4 connectors on either side to protect my solar panels from overcurrent. They still seem to be working fine as of 4/25/26.

26.04.2026

C**D

Great Quality and Perfect for Vehicle Accessories!

These 10 AWG inline fuse holders are excellent quality and work perfectly for adding accessories to your vehicle where an inline fuse is needed. The 40 AMP ATC blade fuses fit snugly, and the heavy-duty wire feels durable and reliable. Easy to install and provides peace of mind for protecting your circuits. Highly recommend!

16.12.2025

M**G

Good fuse holder for adding additional circuits for DC applications

These fuse holders are adequate for the job, but I wish the wire was a little more flexible.

24.03.2026

H**R

Great Value

Appears well made and works as expected

7.04.2026

D**D

Reliable and Effective for DIY Power Projects

I've been using these inline fuse holders in my DIY 24V power bank, and they have worked flawlessly. These fuse holders provide a secure and reliable connection, ensuring that my setup remains protected from potential overloads. What I really like about these fuse holders is their sturdy construction. They fit snugly with the 10 AWG wires, and the 40 AMP fuses offer ample protection for my power bank. The inline design is convenient and makes for a clean installation, which is always a plus for DIY projects. The only minor downside is that the fuse holders can be a bit bulky, which might make them a tight fit in more compact setups. However, this hasn't been a significant issue for my project, and the added protection is well worth it. Overall, these 10 Gauge Inline Fuse Holders have proven to be a reliable component in my 24V power bank. They provide peace of mind with their solid performance and durability. If you're working on a similar project and need dependable fuse protection, these are a great choice.

9.07.2024

A**Y

Great Quality

Well made, heavy, heavy duty wire, good price!

23.01.2026

T**C

Heavy duty

Heavy duty fuse holder worked great on my truck project. Other brands were to lightweight. Melted But this one is quality built

14.12.2025

A**R

EXCELLENT

No issues with quality. Gauge is marked on wire. Works very well for my intended uses.

3.11.2023

S**T

Great

Nice and heavy duty.

10.02.2025

D**N

true 10 gauge

the wires are actually 10 gauge, unlike some out there that claim to be 10 gauge. These are well made.

9.07.2023

A**R

works like it should....

Works like it should... I'd buy again...

6.12.2023

J**D

fuse holder

price on amazon i liked and fast delivery

3.04.2024

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