Types of Fuses Automotive: Which Ones to Stock
Blade fuses in Standard, Mini, Low Profile Mini and Micro2 sizes, plus JCASE box fuses, cover most cars, and this guide explains each type, its amp ratings and which kit stocks them.
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A circuit goes dead in the middle of a job: the lights, the blower or the power outlet quit, and the fuse box is the place to look. Types of fuses automotive covers the blade fuses and box fuses found in cars, trucks and SUVs, and this guide sets out each type, its shape and its amp ratings, so you can match the fuse to the circuit and keep the right spares in the garage.
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Below: blade fuse types, JCASE box fuses, reading amp ratings, and the kits that stock them.
Nilight 372PCS Regular Micro2 Mini Low Profile
A 372-piece blade fuse kit in Standard, Mini, Low Profile Mini and Micro2 types, with amp ratings from 2A to 35A in a 24-compartment box.
Pros
- 4 blade fuse types in a kit: Standard, Mini, Low Profile Mini and Micro2
- 372 fuses, with amp ratings from 2A to 35A
- Color-coded housings with the amp rating carved on top
- Transparent housing shows a blown fuse at a glance
Cons
- No warranty term is stated
- Micro2 fuses top out at 30A, below the 35A of the other types
- No JCASE or high-amp box fuses in the kit
- Standard, Mini and Low Profile Mini share the same amp ratings, so check the size before fitting
Joinfworld 36 Pcs Jcase Fuse Automotive
A 36-piece JCASE fuse kit in tall/standard and low profile box shapes, with 6 fuses at each rating from 20A to 80A.
Pros
- 36 fuses: 6 each at 20A, 30A, 40A, 50A, 60A and 80A
- Tall/standard and low profile JCASE shapes in a kit
- Copper and plastic build, flame retardant per the listing
- 1 year warranty stated on the listing
Cons
- High-amp ratings only: nothing below 20A in the kit
- JCASE fuses only, so blade fuse circuits need a separate kit
- Sorted in a package, with no storage box stated
- Lists Ford, Chevy/GM, Nissan and Toyota fitment, so other makes need a check
140 Pcs Fuses Automotive Kit
A 140-piece blade fuse kit with 70 standard and 70 mini fuses across 7 amp ratings, plus two fuse pullers.
Pros
- 70 standard and 70 mini fuses
- Two fuse pullers included
- Zinc alloy with transparent covers
- 32-volt rating, 30A maximum current
Cons
- Only 7 amp ratings, 5A to 30A
- No warranty term is stated
- No safety listing is stated
- No micro or profile sizes
Bussmann ATC & FT Blade Fuse Assortment (42-Pack)
A 42-pack ATC and FT blade fuse assortment in ratings from 5A to 30A, fast-acting, for commercial or service vehicles.
Pros
- Title lists a 42-pack in ratings from 5A to 30A
- Fast-acting blade fuses for commercial or service vehicles
- ATC and FT blade types in an assortment
- Ratings from 5A to 30A cover the middle of the blade fuse range
Cons
- Title says a 42-pack while the bullets list a package quantity of 5
- Package weight and dimensions differ between bullets and spec table
- No warranty term is stated
- No amp rating list beyond the 5A to 30A range is stated
Types of fuses automotive: the blade fuse types
Most cars use blade fuses, and the Nilight kit covers the 4 types in a box: Standard, Mini, Low Profile Mini and Micro2.
| Type | Amp ratings listed |
|---|---|
| Standard blade | 2A, 5A, 10A, 15A, 20A, 25A, 30A, 35A |
| Mini blade | 2A, 5A, 10A, 15A, 20A, 25A, 30A, 35A |
| Low Profile Mini blade | 2A, 5A, 10A, 15A, 20A, 25A, 30A, 35A |
| Micro2 blade | 5A, 7.5A, 10A, 15A, 20A, 25A, 30A |
The 4 types are different sizes of blade fuse, and each is made to break the circuit on overload. The Nilight kit holds 372 fuses across the 4 types in a box with 24 compartments.
Match the replacement to the fuse that blew: same type, same amp rating. In the Nilight and Joinfworld kits, the rating is carved on top of each fuse and the housing is color-coded.
JCASE box fuses for high-amp circuits
Higher-amp circuits often use box-shaped JCASE fuses. The Joinfworld kit holds 36 JCASE fuses in tall/standard and low profile shapes, with 6 fuses at each rating from 20A to 80A, and its 40A, 50A, 60A and 80A ratings sit above the 35A top of the blade kits here. The listing names Ford, Chevy/GM, Nissan and Toyota pickup trucks, cars and SUVs.
How to read a fuse
Read the fuse before fitting it. On the fuses in these kits, the amp rating is carved on top and the housing is color-coded, so the rating can be read without a meter, and the Nilight housings are transparent, so a blown fuse can be seen through the housing. The replacement has to match the type and amp rating of the fuse that blew; a fuse puller grips it for removal.
Fuse kits for the garage
Each kit below stocks a part of the fuse box: Nilight covers the blade types, Joinfworld covers high-amp JCASE circuits, Bussmann covers ATC and FT blades, and Qizpcer refills Standard and Mini sizes.
Use rated jack stands on solid ground, wear eye protection with power and air tools, keep fuel-burning equipment out of a closed garage, and follow the manual for every tool. Read our Safety Disclaimer.
FAQ: garage tools
What are the 4 types of automotive blade fuses?
Standard, Mini, Low Profile Mini and Micro2. The Nilight kit covers all 4: 2A to 35A for Standard, Mini and Low Profile Mini, and 5A to 30A for Micro2.
What amp ratings do car fuses come in?
In the kits here, blade fuse ratings run from 2A to 35A and JCASE ratings from 20A to 80A: Nilight lists 2A, 5A, 7.5A, 10A, 15A, 20A, 25A, 30A and 35A, and Joinfworld lists 20A, 30A, 40A, 50A, 60A and 80A.
How do I tell what amp a fuse is?
On the Nilight and Joinfworld fuses, read the top: the amp rating is carved there and the housing is color-coded. The Nilight housings are transparent, so a blown fuse can be seen through the housing.
What is a JCASE fuse?
A box-shaped fuse for higher-amp circuits, in tall/standard and low profile shapes. The Joinfworld kit lists 36 JCASE fuses from 20A to 80A, with 6 fuses at each rating, for trucks, cars and SUVs.
Do the fuse kits come with a warranty?
The Joinfworld kit lists a 1 year warranty. The Nilight, Bussmann and Qizpcer listings state no warranty term.
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