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Cartridge fuses are essential safety devices that protect electrical circuits from overcurrents and short circuits. Selecting the correct fuse rating and type is crucial for preventing damage to appliances and wiring, and most importantly, for ensuring electrical safety in your home or workshop. This guide will help you navigate the options and make an informed decision.
Includes 25 Pcs Female Micro Slow-Blow MAXI Fuse, 5 fuses of each amp rating: 15amp, 20amp,25amp,30amp,40amp FMM fuses.
Meets the latest demand for smaller (0.59 inches tall), high current circuit protection products being found on new model vehicles.
Industry standard color-coding indicates amp rating.
Newest, most comprehensive circuit protection assortment available to the aftermarket.
Standard Fuse Assortment Kit as your automotive wiring and electrical equipment safety solution; Protects your vehicle and electrical devices from a short circuit or overload.
【Package Contents】: You will receive 1 combination kit containing 25 square insertable fuses, among which there are 5 fuses of 15A, 20A, 25A, 30A, and 40A, respectively. Its quantity is sufficient to fully meet your daily needs for fuse replacement.
【Effective Safeguarding】: The car fuses can quickly cut off the current when there is an abnormality in the circuit, reducing the possibility of a fire caused by the circuit, ensures that your vehicle and electrical equipment will not be damaged due...
【Quality Material】: The fuse assortment kit is made of high-quality copper alloy and plastic materials, featuring excellent high-temperature resistance and flame retardancy, outstanding electrical conductivity, and ruggedness. It can withstand the...
【Compatibility】: The square plug-in fuse has wide compatibility and is suitable for electrical equipment in most vehicles, such as sedans, SUVs, trucks, recreational vehicles, tricycles, all-terrain vehicles, golf carts, ships, etc. It is usually...
【Specifications and Distinct Identification】: The rated voltage of the car fuse is 32 VDC. Under 32VDC voltage conditions, its breaking capacity can reach 1000A. It is equipped with a variety of color shell designs, making it convenient for you to...
WHAT YOU GET - Covers 10 commonly ford fuses: 20A/ 30A/ 40A/ 50A/ 60A (4 pcs of each model).
EXCELLENT QUALITY - FMM fuse kit made of premium materials, fast and precise fusing current to protects your vehicle and electrical equipment from short circuits or overloads.
EASY TO DETECTION - The FMX Fuse has current and voltage markings on top so that you can quickly find the fuse you need.
GREAT COMPATIBILITY - Widely used in cars, trucks, SUVs, RVs, boats and other electrical equipment.
EXCELLENT CAR SPARE FUSE KIT - Voltage:58V/32V, Current: 20A, 30A, 40A, 50A, 60A, Size: low profile and tall/standard , variety of amperage specifications to keep you prepared in case of an emergency.Please confirm that the size you need before placing...
Each fuse is clearly marked with amperage and color coded for easy identification
Includes 50 MCASE mini fuses, 10 fuses of each amp rating: 15, 20, 25, 30, and 40 amperes.
Smaller than J-Case box fuses - SEE DIMENSIONS picture. These are a mini version of the more common JCASE cartridge fuses.
Commonly used in truck fuse boxes, along with other makes, for various automotive systems.
Standard Fuse Assortment Kit as your automotive wiring and electrical equipment safety solution; Protects your vehicle and electrical devices from a short circuit or overload.
CARTRIDGE FUSE CHARACTERISTICS – Fuses are color-coded and printed with the rated current on top for easy identification and installation. Transparent housing covers allow for visual inspection (in case of a blown fuse). Housing material is molded with...
CARTRIDGE FUSE SIZE/GROUP/DIMENSIONS - Tall Standard & Short Low Profile (female terminal design) / Group: JCASE & LPJCASE / JCASE - Length: 14mm (.55") x Width: 12mm (.47") x Height: 27mm (1.06") / LPJCASE - Length: 14mm (.55") x Width: 12mm (.47") x...
CARTRIDGE FUSE TECHNICAL SPECS/COMPATIBILITY – Current rating (amps): BLUE-20A / PINK-30A / GREEN-40A / RED-50A / YELLOW-60A / JCASE overall voltage rating: 32 VDC / LPJCASE overall voltage rating: 58 VDC /Automotive and non-automotive use: MARINE...
CARTRIDGE FUSE MATERIAL/REGULATORY COMPLIANCE - Housing: Non-conductive, heat-resistant nylon (PA66). Cover: Polycarbonate (PC) or Polysulfone (PSU) / RoHS Compliant, complies with: SAE 2741, ISO 8820-4 (in reference to electrical, mechanical, and...
WARRANTY/SATISFACTION GUARANTEE - Enjoy peace of mind with our 1-year limited warranty. Should you encounter a defective product(s), BioFuse will repair or replace the defective product(s) at no cost to you. BioFuse is committed to providing customers...
Package Includes: This JCASE Fuses Assortment Kit includes 36pcs low profile fuses, 6 different colors of fuses. The rating of each fuse is blue 20A x 6pcs, pink 30A x 6pcs, green 40A x 6pcs, red 50A x 6pcs, yellow 60A x 6pcs, black 80A x 6pcs
Premium Material: The Low Profile Fuse is made of high quality copper and plastic, good conductivity and flame retardant. Compared with others, it features safer and more durable
Easy to Identify: Each fuse can be easily identified by their color-coded plastic housings and the carved amp rating figures on the top. The visual and removable cover makes it convenient for you to check
Easy to Carry & Store: All the fuses are sorted and put in a package, super easy for you to carry and store
Great Compatibility: Joinfworld JCASE Fuse can be widely used in cars, trucks, SUVs, homes, boats, RV, ATV, UTV, golf carts, and more electronic equipment. For any problems, please do not hesitate to write to us
Last update on 2026-07-26 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Cartridge Fuses
Understanding Fuse Types
Glass Fuses: Common in electronics and smaller appliances, these offer visible indication of a blown fuse. They are generally less robust than ceramic options.
Ceramic Fuses: More durable and better at handling higher temperatures and surges, ceramic fuses are ideal for industrial applications, automotive systems, and higher-power devices.
Fast-Acting vs. Time-Delay: Fast-acting fuses interrupt the circuit immediately upon detecting an overcurrent. Time-delay fuses (also known as slow-blow) can tolerate brief surge currents, making them suitable for motors or transformers that draw extra power on startup.
Key Specifications to Consider
Amperage Rating: This indicates the maximum current the fuse can handle before blowing. It should be matched to the circuit's expected load, never exceeding the wire's capacity.
Voltage Rating: The fuse's voltage rating must be equal to or greater than the circuit's operating voltage. Using a fuse with a lower voltage rating can be dangerous.
Interrupting Rating (AIC): This is the maximum fault current the fuse can safely interrupt without causing damage. Higher AIC ratings are generally safer for high-power circuits.
Size and Form Factor: Cartridge fuses come in various standard sizes (e.g., 5x20mm, 6x32mm, 1/4" x 1 1/4"). Ensure the replacement fuse matches the physical dimensions of the original.
Where to Find Fuse Information
Appliance Manuals: The most reliable source for fuse specifications is the owner's manual for the device you are protecting.
Existing Fuse: The amperage, voltage, and type are usually printed directly on the fuse body. Always replace with an identical or equivalent fuse.
Circuit Breaker Panel: For home wiring, circuit breaker ratings can sometimes guide fuse selection, but always defer to appliance-specific documentation.
Comparison Tips
When replacing a fuse, always use one with the exact same amperage and voltage rating.
For devices with high inrush currents (like motors), opt for a time-delay fuse if the original was a time-delay type.
If unsure, consult a qualified electrician to determine the correct fuse specifications for your application.
Frequently Asked Questions
What is the difference between fast-acting and time-delay fuses?
Fast-acting fuses blow instantly when an overcurrent is detected, protecting sensitive electronics. Time-delay fuses are designed to withstand temporary surges, such as those from motor startup, before blowing.
Can I use a fuse with a higher amperage rating than the original?
No, you should never use a fuse with a higher amperage rating. This could lead to overheating wires and potential fire hazards, as the fuse would not protect the circuit adequately.
What does the voltage rating on a fuse mean?
The voltage rating indicates the maximum voltage the fuse can safely handle without arcing after it blows. It must be equal to or greater than the circuit's operating voltage.
How do I know what size fuse I need?
Fuse sizes are standardized physical dimensions. You can often find the required size on the old fuse, in the appliance's manual, or by measuring the fuse holder.
What is an interrupting rating (AIC)?
The interrupting rating (also known as AIC or Breaking Capacity) is the maximum fault current a fuse can safely interrupt. A higher AIC is generally recommended for circuits with a higher potential fault current.
Are glass fuses less safe than ceramic fuses?
Glass fuses are typically used in lower-power applications and can be more fragile. Ceramic fuses are generally more robust, handle higher temperatures better, and are preferred for higher-power or high-vibration environments.
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