High Current Bolt Down Fuse | ANL-B150 DC150V 100-800A ESS Fuse
ANL-B150 series bolt-down fuse, DC150V high-current ceramic fuse (100A-800A), UL248-1 & GB/T13539 certified, designed for energy storage battery, supercapacitor, EV motorcycle and DC busbar short-circuit & overload protection.
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The high current bolt down fuse ANL-B150 series is a premium DC ceramic protection device manufactured by EssFuse (Dongguan Gongfu Electronic). This high current bolt down fuse adopts bolt-on stud mounting structure, delivering reliable overload and short-circuit protection for lithium battery packs, supercapacitor modules, energy storage cabinets and high-power DC new energy equipment. With compact structure and stable performance across a wide temperature range, this high current bolt down fuse is widely specified by energy storage integrators for DC power distribution projects.
Explore our full range of high current bolt down fuse models for different voltage and current specifications.
Key Features of High Current Bolt Down Fuse ANL-B150
- Rated DC voltage: 150Vdc; current range: 100A to 800A, custom current ratings available
- Maximum interrupting capacity: 20kA @150Vdc, with time constant 2.5-3ms
- High-temperature resistant ceramic housing for excellent arc-quenching performance
- Bolt-down mounting for copper busbar connection, low contact resistance and reduced heating risk
- Compliant with UL248-1 and GB/T13539 safety standards
- Wide operating temperature range: -40℃ to +125℃, suitable for outdoor ESS, vehicles and UAV applications
This high current bolt down fuse features a sealed ceramic structure to effectively isolate electric arcs during fault interruption. Compared with plug-in fuses, the bolt-down connection method lowers contact resistance and prevents overheating during long-term high-current operation. It maintains stable performance under rated continuous current, and triggers rapidly in case of overload or short circuit to protect expensive battery and power electronic components.
Main Electrical Specifications of High Current Bolt Down Fuse
| Item | Parameter |
|---|---|
| Product Series | ANL-B150 Series High Current Bolt Down Fuse |
| Rated DC Voltage | 150 Vdc (800A model: 85 Vdc) |
| Rated Current Range | 100A ~ 800A |
| Maximum Interrupting Capacity | 20kA @150Vdc; time constant 2.5-3ms |
| Compliance Standards | UL248-1, GB/T13539 |
| Housing Material | High-temperature resistant ceramic |
| Operating Temperature | -40 ℃ ~ +125 ℃ |
| Mounting Type | Bolt-down stud mounting for copper busbar |
| Custom Service | Custom current ratings available upon request |
I²t Parameters of High Current Bolt Down Fuse ANL-B150
| Part Number | Rated Current (A) | Voltage Rating | Pre-arcing I²t | Arcing I²t (Typ) | Total I²t |
|---|---|---|---|---|---|
| ANL-B150100SF39 | 100 | 150Vdc | 10000 | 3000 | 13000 |
| ANL-B150150SF39 | 150 | 150Vdc | 22500 | 6750 | 29250 |
| ANL-B150200SF39 | 200 | 150Vdc | 40000 | 12000 | 52000 |
| ANL-B150250SF39 | 250 | 150Vdc | 62500 | 18750 | 81250 |
| ANL-B150300SF39 | 300 | 150Vdc | 92500 | 27750 | 120250 |
| ANL-B150350SF39 | 350 | 150Vdc | 122500 | 36750 | 159250 |
| ANL-B150400SF39 | 400 | 150Vdc | 192000 | 48000 | 240000 |
| ANL-B150450SF39 | 450 | 150Vdc | 233000 | 69900 | 302900 |
| ANL-B150500SF39 | 500 | 150Vdc | 276000 | 75000 | 351000 |
| ANL-B150550SF39 | 550 | 150Vdc | 285500 | 91700 | 377200 |
| ANL-B150600SF39 | 600 | 150Vdc | 295000 | 108000 | 403000 |
| ANL-B150650SF39 | 650 | 150Vdc | 406500 | 127000 | 533500 |
| ANL-B150700SF39 | 700 | 150Vdc | 518000 | 147000 | 665000 |
| ANL-B150750SF39 | 750 | 150Vdc | 610000 | 174000 | 784000 |
| ANL-B150800SF39 | 800 | 85Vdc | 640000 | 192000 | 832000 |
Note: Custom current ratings are available based on project requirements. During component selection, ensure the total I²t of the fuse is lower than the withstand I²t limit of semiconductor devices. Please refer to the datasheet for the time-current curve and temperature derating curve for engineering design.
Time-Current Characteristic of High Current Bolt Down Fuse
| % of Rated Current | Opening Time (Min / Max, 100A-800A Series) |
|---|---|
| 100% | 4H / ∞ |
| 300% | ~ / 10 S |
Full time-current characteristic curve and temperature derating curve are available in the official PDF datasheet.
Mechanical Dimensions of High Current Bolt Down Fuse
| Dimension Item | Value (mm) | Tolerance |
|---|---|---|
| Total Length | 55.4 | ±0.1 |
| Mounting Hole Center Distance | 39.0 | ±0.5 |
| Body Width | 20.0 | ±0.01 |
| Bolt Hole Diameter | 8.5 | ±0.5 |
| Terminal Thickness | 0.8 | ±0.01 |
| Counterbore Diameter | 11.25 | ±0.01 |
Application Scenarios of High Current Bolt Down Fuse
- Energy storage battery cabinets and ESS system protection
- Electric motorcycle and new energy tram power distribution circuits
- Supercapacitor module overcurrent and short-circuit protection
- UAV high-current power supply system protection
- High-current wire harness protection
- DC charging auxiliary systems and industrial DC busbars
Installation Notes for High Current Bolt Down Fuse
Install this high current bolt down fuse on a flat copper busbar. Tighten the mounting bolts with the recommended torque to ensure good contact and avoid abnormal overheating. Do not operate the fuse beyond its rated voltage and current range. Regular inspection is recommended for long-running energy storage projects.
Contact our sales team for datasheets, dimension drawings, sample support and DC protection solution consultation.
FAQ for High Current Bolt Down Fuse ANL-B150
Q1: What is the rated DC voltage of the ANL-B150 high current bolt down fuse?
A1: The standard rated DC voltage is 150Vdc with a maximum breaking capacity of 20kA, suitable for DC energy storage circuits. The 800A model is rated at 85Vdc.
Q2: What current ratings are available for the ANL-B150 series?
A2: The current range covers 100A to 800A. Custom current specifications can be produced for projects with special requirements.
Q3: What is the interrupting rating of this high current bolt down fuse?
A3: Maximum segmentation capacity is 20kA @150Vdc with a time constant of 2.5-3ms.
Q4: What is the operating temperature range?
A4: The operating temperature ranges from -40℃ to +125℃, suitable for harsh environments such as outdoor ESS, vehicles and UAVs.
Q5: What standards does the ANL-B150 comply with?
A5: This high current bolt down fuse complies with UL248-1 and GB/T13539 standards, with a high-temperature resistant ceramic housing.
Q6: How to select the correct current rating for a battery system?
A6: Keep a safety margin: select a fuse rated current 1.25-1.6 times the continuous working current of the circuit. Compare the total I²t of the fuse with the withstand I²t value of the semiconductor.
Q7: What mounting requirements should be followed?
A7: It adopts bolt-down stud mounting. Ensure the contact surface is flat and clean, and apply the recommended torque; loose connections will cause abnormal overheating.
Q8: Can the ANL-B150 be used for supercapacitor bank protection?
A8: Yes, this high current bolt down fuse is widely used for overcurrent and short-circuit protection of supercapacitor modules within the rated voltage.
Q9: Where can I download the full datasheet?
A9: Please contact our sales representative to get the ANL-B150 series PDF datasheet with dimension drawing, derating curve and time-current graph.
Bolt-Down Fuse | Reliable DC150V 100‑800A ESS Fuse UL248‑1 GB/T13539
