CNL CNN ANL Bolt‑Down Fuses | Automotive High‑Current Stud‑Mount Fuse
CNL CNN ANL bolt‑down fuses, heavy‑duty stud‑mount automotive high‑current fuses. DIN‑standard CNL / CNN and fork‑type ANL for truck, forklift, marine, battery main‑circuit over‑current & short‑circuit protection, UL‑recognized, RoHS compliant.
CNL CNN ANL bolt‑down fuses are heavy‑duty stud‑mount over‑current protection components built for automotive and mobile equipment electrical systems. Compared with regular plug‑in blade fuses, these bolt‑on fuses deliver superior resistance against vibration, mechanical shock and high‑temperature operating environments. CNL, CNN and ANL are three mainstream heavy‑duty series widely used in commercial vehicles, construction machinery and marine applications, safeguarding high‑current main circuits, battery banks, alternators and high‑power loads from overload, surge, circuit burnout and short‑circuit‑caused fire risks.
Core Advantages & Key Features
- Stud / bolt‑mount mechanical structure, outstanding anti‑vibration and shock resistance for mobile machinery
- Broad current coverage: 10A‑800A, covers light‑duty to ultra‑high‑current main‑circuit requirements
- CNL and CNN comply with DIN 43560 standard and are fitted with visual blown‑fault indicator window for quick on‑site inspection and maintenance
- ANL fork‑type construction allows direct bolt‑on installation without an extra fuse base, ideal for limited‑space installation and vehicle aftermarket modification
- High‑strength glass‑fiber / bakelite insulating housing; nickel‑plated brass alloy terminals for low contact‑resistance and corrosion resistance
- Stable time‑current melting performance, high interrupting capacity for short‑circuit fault clearance
- UL‑recognized and RoHS‑compliant, suitable for OEM mass‑production and global aftermarket projects
Series Parameter Comparison Table
| Item | CNL Fuses | CNN Fuses | ANL Fuses |
|---|---|---|---|
| Voltage Rating | 80V AC / 80V DC | 130V AC / 80V DC | 32V‑125V DC |
| Current Range | 10A‑800A | 10A‑800A | 10A‑500A |
| Installation Requirement | Require dedicated DIN‑standard fuse base | Require dedicated DIN‑standard fuse base | Direct bolt mounting, no fuse‑base needed |
| Visual Blown Indicator | Yes | Yes | No |
| Interrupting Capacity | ‑ | 2600A(L/R 5ms),1600A(L/R 10ms) | ‑ |
| Working Temperature | ‑40℃ ~ +125℃ | ‑40℃ ~ +125℃ | ‑40℃ ~ +125℃ |
| Main Application | Light‑duty vehicle, forklift, low‑voltage industrial mobile equipment | Heavy‑duty truck, construction machinery, marine battery power circuits | Passenger car, RV, yacht, car‑audio, off‑road vehicle modification |
CNL Series Detailed Technical Data
| Item | Specification |
|---|---|
| Model | Large‑stud CNL bolt‑down fuse |
| Rated Current | 35A‑800A (35,40,50,60,80,100,125,130,150,175,180,200,225,250,275,300,400,500,600,675,700,800A) |
| Rated Voltage | 80V‑125V AC/DC |
| Housing Material | Glass‑fiber reinforced bakelite (green) |
| Terminal | Brass‑alloy, nickel‑plated surface finish |
| Compliance Standard | DIN43560/1, RoHS, UL‑recognized |
| Time‑Current Characteristic | 100% rated: min 4h; 250% rated: max 300s clearing time |
Application Scope
- CNL: Forklifts, battery‑powered handling vehicles, light commercial vehicles, auxiliary battery circuits, low‑voltage protection for mobile industrial equipment
- CNN: Heavy‑duty trucks, large‑size forklifts, construction machinery, vehicle main power distribution, marine battery power‑supply systems
- ANL: Passenger cars, RV, yachts, high‑power car‑audio, alternator protection, off‑road vehicle main battery circuits and automotive modification projects
Match CNL / CNN / ANL with corresponding bolt‑down fuse holders for complete high‑current circuit assembly.
Selection & Installation Guidelines
Selection Principles
- Voltage matching: Choose fuse voltage rating according to actual AC / DC working voltage of your system.
- Current matching: Select fuse rated current to be 1.1‑1.25 times of circuit continuous working current; never use higher‑ampere replacement.
- Installation‑space consideration: Choose CNL / CNN when dedicated fuse‑base mounting is available; select ANL for compact‑space direct bolt‑on installation.
Installation & Maintenance Tips
- Disconnect main power supply before installation or replacement to prevent accidental short‑circuit.
- Tighten mounting bolts to required torque value, avoid poor contact and over‑heating caused by loose bolts.
- Check fuse status via visual indicator for CNL and CNN; test ANL integrity by multimeter.
- Only replace with identical‑model fuses to keep original circuit‑protection performance.
자주 묻는 질문
Q: What are CNL CNN ANL bolt‑down fuses?
A: CNL CNN ANL bolt‑down fuses are heavy‑duty stud‑mount high‑current fuses for automotive and mobile‑equipment, for over‑current and short‑circuit protection of battery, alternator and high‑power loads.
Q: What is the main difference between CNL and CNN?
A: Both adopt DIN43560 standard with same mounting dimensions. CNN supports higher AC voltage (130V AC) and has greater interrupting capacity for heavy‑duty working conditions, CNL is designed for 80V AC/DC low‑voltage scenarios.
Q: Must ANL bolt‑down fuses work with fuse bases?
A: ANL fork‑type supports direct bolt‑mounting without special fuse base, which makes it popular in automotive aftermarket modification.
Q: How to select correct ampere value for bolt‑down fuses?
A: Rated current should be 1.1‑1.25 times continuous working current of the circuit; voltage rating must cover the maximum operating voltage of your system.
Q: Are CNL, CNN and ANL bolt‑down fuses RoHS and UL‑recognized?
A: CNL and CNN series are UL‑recognized; all three series comply with RoHS lead‑free requirements for global OEM and aftermarket export.
Q: What is operating temperature range for these bolt‑down fuses?
A: Standard working range is ‑40℃ ~ +125℃. Temperature derating calculation is needed for engine‑compartment high‑temperature installation.
Q: Can you offer bulk supply and OEM custom‑marking service?
A: Yes, bulk wholesale, laser marking and custom‑packaging are available. Please send your technical specifications for datasheet and quotation.
Get Quotation & Technical Support
Please inform us your target series (CNL / CNN / ANL), ampere ratings, order quantity and application conditions. Our engineering team can provide datasheet, bulk price and professional fuse‑selection advice for your high‑current projects.
