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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10 Gauge Fuse Holder - 10 AWG Inline Fuse Holder with 40 AMP ATC Blade Fuses (4pack)

10 Gauge Fuse Holder - 10 AWG Inline Fuse Holder with 40 AMP ATC Blade Fuses (4pack)

Product ID: 401656375

Details

AC Adapter Current
40 Amps
Brand
Qizpcer
Voltage
12 Volts
Material
Copper
Mounting Type
Through-Hole

⚡Supports up to 40A current

💧Water-resistant rubber cap

🔌10 AWG heavy-duty wire

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C$3069

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Description

⚡ Power Up with Confidence – Fuse Protection That Means Business

PLUG PLAY VERSATILITY - Compatible with all standard ATC/ATO blade fuses up to 40A, making installation effortless and adaptable.
WEATHERPROOF CONFIDENCE - Water-resistant cap seals out moisture and dust, protecting your fuses in demanding environments.
COMPACT DURABLE DESIGN - Slim 42x35x13mm footprint fits tight spaces while withstanding rugged use in cars, trucks, boats, and more.
COMPLETE 4 PACK CONVENIENCE - Includes 4 inline fuse holders and 4 high-quality 40A fuses—ready to upgrade multiple circuits at once.
BUILT TO POWER YOUR PROJECTS - Robust 10 AWG copper wire ensures reliable, heavy-duty current flow for all your automotive and marine needs.

The Qizpcer 10 Gauge Inline Fuse Holder kit features heavy-duty 10 AWG copper wire and supports up to 40 amps with included ATC/ATO blade fuses. Designed with a water-resistant rubber cap, it safeguards your circuits from moisture and dust. Compact and versatile, this 4-pack is perfect for automotive, marine, and off-road projects requiring reliable fuse protection.

Specifications

AC Adapter Current	40 Amps
ASIN	B08BWRSPY1
Best Sellers Rank	#664,850 in Electronics ( See Top 100 in Electronics ) #177 in Car & Vehicle Fuse Holders
Brand	Qizpcer
Brand Name	Qizpcer
Colour	red
Country of Origin	USA
Current Rating	40 Amps
Customer Reviews	4.7 out of 5 stars 2,224 Reviews
Global Trade Identification Number	00738631721604
Manufacturer	Qizpcer
Material	Copper
Material Type	Copper
Maximum Current	40 Amps
Model Number	BXSZ-4
Mounting Type	Through-Hole Mount
Part Number	BXSZ-4
UPC	738631721604 073863172160
Unit Count	4 Count
Voltage	12 Volts

Reviews

A**R

EXCELLENT

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

3.11.2023

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

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

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5 days ago

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C$3069

Duties & taxes included

In stock

Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Nicaragua.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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