Automotive Blade Fuses Manufacturer | Standard, Maxi & Custom Fuses
TONFUL Electric is a premier manufacturer of high-reliability automotive blade fuses, providing critical circuit protection for passenger vehicles, commercial trucks, marine vessels, and heavy machinery. Our comprehensive range includes industry-standard Micro, Mini (ATM), Standard (ATO/ATC), Maxi, and MEGA fuses, engineered to safely interrupt overcurrents and prevent catastrophic electrical failures.
Beyond standard 12V/32V replacement fuses, our engineering team excels in developing OEM drop-in alternatives for major global brands. Whether you need an exact cross-reference equivalent for European systems or a custom-manufactured high-current solution (such as 300A / 50V DC busbar-style fuses for new energy vehicles), TONFUL delivers uncompromising precision, superior materials, and factory-direct scalability.
Certified By
Our Blade Fuses Range
Low Profile Mini Fuse
Standard Blade Fuses
Maxi Blade Fuses
East Europe Fuses
Glass Tube Fuses
MEGA Fuses
Circuit Breaker Blade Fuses
Auto Fuse Holders
Micro Blade Fuses
Blade Fuses With Light
Fuse Link Female Type
Fuse Link Male Type
Fuse Link Maxi Hook Type
Fuse Link Mini Hook Type
Fuse Link Bent Male Type
LED-IN Blade Fuse
Technical Specifications: Automotive Blade Fuses
| Specification | Available Options / Parameters |
|---|---|
| Fuse Types (保险丝类型) | Micro2, Micro3, Mini (ATM), Standard (ATO/ATC), Maxi, MEGA, Glass Tube |
| Amperage Range (电流范围) | 1A to 80A (Standard Blade) / Up to 300A+ (Maxi/MEGA/Custom Busbar) |
| Voltage Rating (额定电压) | 12V, 24V, 32V, 58V, up to 80V DC (For specific EV/Telecom applications) |
| Housing Material (外壳材质) | High-Temperature PC, PA66, PES (UL94 V-0 flame retardant) |
| Element Material (熔体材质) | High-purity Zinc Alloy, Silver-plated Copper, Tin-plated Zinc |
| Time-Current Characteristic (熔断特性) | Fast-Acting (Standard), Time-Delay / Slow-Blow (For motor loads) |
| Operating Temperature (工作温度) | -40°C to +125°C |
| Compliance & Standards (认证标准) | ISO 8820, SAE J1284, RoHS, CE |
| OEM Customization (定制服务) | Custom amperage, busbar/bolt-on designs, OEM brand cross-referencing |
Why Choose TONFUL Blade Fuses
Precision Manufacturing for Flawless Performance
A fuse is a critical safety device. Our blade fuses are manufactured with extremely tight tolerances on the metal melting element. This ensures they react at the exact specified overload current, cutting the circuit instantly before wiring can overheat.
Superior Materials & Uncompromising Durability
We refuse to use recycled plastics. Our fuse housings are molded from premium, high-temperature PA66 and PC materials that will not melt or deform under the severe heat of modern engine compartments, ensuring the fuse element remains securely protected.
OEM Expertise & Brand Alternatives
Struggling with long lead times from premium European or American fuse brands? TONFUL specializes in engineering highly reliable drop-in equivalents. We provide the exact same dimensional and performance characteristics, allowing you to optimize your supply chain without sacrificing safety.
High-Current & EV Customization Capabilities
We go far beyond standard car fuses. For electric vehicles (EVs), forklifts, and industrial power systems, our R&D team can design and manufacture custom heavy-duty solutions, including specialized 50V DC / 300A busbar-style bolted fuses tailored to your exact drawings.
Rigorous Quality Control & Full Compliance
Every batch undergoes stringent automated testing for voltage drop, time-current melting characteristics, and thermal shock. Our products comply with SAE, ISO 8820, and RoHS standards, giving global buyers total peace of mind.
Global Support & Reliable Supply Chain
With highly automated stamping and assembly lines, we guarantee stable, high-volume production. Whether you need blister packs for aftermarket retail or bulk tray packaging for automotive assembly lines, we deliver on time, every time.
Professional Selection Guide
1.Identify the Correct Amperage Rating
Never guess the amperage. The rating is stamped on the fuse and indicated by industry-standard colors (e.g., Yellow = 20A, Green = 30A). Replacing a blown fuse with a higher amperage creates a severe fire hazard.
2.Select the Right Physical Size (Type)
Automotive fuse boxes are highly specific. Ensure you select the correct form factor: Micro2 (smallest), Low-Profile Mini, Mini (ATM), Standard (ATO/ATC), or Maxi (for heavy-duty applications).
3.Understand the Voltage Rating
Standard cars use 12V or 24V, so standard 32V fuses are sufficient. However, for electric vehicles (EVs), telecoms, or specific industrial equipment, you must specify high-voltage fuses (e.g., 58V DC or 80V DC) to prevent electrical arcing when the fuse blows.
4.Choose the Time-Current Characteristic (Blow Speed)
For sensitive electronics (radios, ECUs), select a Fast-Acting fuse. For circuits with initial power surges (like wiper motors or cooling fans), choose a Slow-Blow (Time-Delay) fuse to prevent nuisance blowing during startup.
5.Verify Quality and Compliance
Look for clear, laser-etched amperage markings that won't fade, and ensure the metal blades are thick and corrosion-resistant. For B2B procurement, always verify the manufacturer's ISO and RoHS compliance.
6.Evaluate Custom OEM/ODM Needs
If you are developing a new vehicle architecture or struggling to source a specific high-current brand-name fuse, contact our engineering team. We can provide custom form factors, specific melting curves, or direct cross-reference replacements.
Get Your Free Sample!
We provide samples for free, you just need to tell us what you need
MORE THAN JUST A BLADE FUSE MANUFACTURER
Service Consultation
Whether your Blade Fuses requirements are straightforward or complex, our team provides expert advice and technical consultation. For more intricate projects, we offer in-depth engineering support to ensure optimal product selection and application, guaranteeing safety and efficiency in your electrical systems.
Product Recommendations
Unsure which Blade Fuse suits your system? Our specialists provide free, customized recommendations based on your specific operational and environmental requirements, ensuring you get the perfect fit for your electrical protection needs.
Installation Support
Need help with installation? Our technical team is available to answer your questions or provide hands-on support. For larger projects, we can even dispatch an engineer to your site for on-the-ground assistance, ensuring your blade fuses are installed correctly and function seamlessly within your electrical network.
Logistics Support
If you lack a reliable freight forwarder, we can arrange transportation from our factory to your project site at no extra cost. Our logistics team ensures timely and secure delivery to keep your project on schedule, minimizing downtime and delays.
Frequently Asked Questions
We have compiled some common questions from our clients. If your question isn’t included here, our customer service is always available to help. We’d love to talk with you.
Q1: What is a blade fuse and what does it do?
A blade fuse is a standard type of electrical fuse used in modern vehicles. Its primary job is to protect the wiring and electrical equipment in a circuit. It contains a metal element designed to melt and break the circuit if the current exceeds a safe level, preventing damage and potential fire.
Q2: What do the different blade fuse colors mean?
The color of the fuse indicates its amperage rating. This is a standardized industry code:
Yellow: 20A
Clear/White: 25A
Green: 30A
Blue: 15A
Red: 10A
Pink/Orange: 5A
Brown: 7.5A
Q3: What are the different sizes of blade fuses?
The main sizes are:
Micro2 & Micro3: Smallest, for very new vehicles with limited space.
Low-Profile Mini: Shorter than standard Mini fuses.
Mini (APM/ATM): The most common size in modern cars.
Standard (ATO/ATC): The classic size found in most vehicles for decades.
Maxi (APX): The largest size, used for very high-current circuits.
Q4: What causes a car fuse to blow repeatedly?
A blown fuse is a symptom of an underlying problem. If a new fuse blows immediately or repeatedly, it indicates:
A short circuit in the wiring (e.g., damaged insulation).
A malfunctioning component (e.g., a motor seizing, like in a power window or blower fan).
Overloading the circuit by adding accessories that draw more power than the circuit was designed for.
Q5: Can I use a higher amp fuse if I don't have the correct one?
No, absolutely not. This is extremely dangerous. Using a higher amp fuse allows excessive current to flow, which can overheat the wiring, melt insulation, and start an electrical fire. Always replace a fuse with one of the exact same amperage rating.
Q6: Can I repair a blown fuse?
No. Blade fuses are sealed, single-use units. They cannot and should not be repaired. Attempting to bypass a blown fuse with foil, wire, or any other metal object completely defeats its safety purpose and creates a severe fire hazard. Always replace it with a new, high-quality fuse.
Q7: What is the difference between a "fast-acting" and a "slow-blow" fuse?
Fast-Acting fuses blow almost instantly when their current rating is exceeded, protecting sensitive electronics. Slow-Blow (Time-Delay) fuses tolerate a temporary current surge (like when a motor starts) without blowing, but will blow under a sustained overload.
Q8: How can I tell if a TONFUL fuse is high quality?
High-quality fuses, like those from TONFUL, have distinct features:
Clear, Laser-Etched Markings: The amperage rating won’t rub off over time.
Precise Dimensions: They fit snugly and securely in the fuse box without being loose or too tight.
Robust Housing: Made from high-grade plastic that is heat-resistant and durable.
Quality Internal Element: Made from precise materials to ensure it reacts at the exact specified current.
Compliance Marks: Look for marks like CE, RoHS, and compliance with international standards (ISO 9001), which indicate rigorous testing.
Q9: Does TONFUL offer custom or OEM services for blade fuses?
Yes. As a professional manufacturer, TONFUL specializes in OEM and ODM services. We can provide custom amperage ratings, branding, packaging (bulk, blister packs, clamshells), and even tailored performance characteristics to meet specific client requirements. Contact our sales team for more information on custom solutions.
