Creepage vs Clearance: Key Differences in Electrical Insulation
Creepage and clearance are two fundamental measurements used in electrical insulation design. Both define the…
Read More
You are here:
EFB750 | 400A 750VDC 50kA aR/aBAT Fast Acting Fuse
The EFB750 400A Fast Acting Fuse is designed for ultra-fast response in high-voltage AC/DC circuits. Rated at 750V and offering a breaking capacity of 100kA (AC) and 50kA (DC), it provides critical short-circuit protection for semiconductors, battery packs, and power systems. The dual operation classes—aR for semiconductor protection and aBAT for battery system safety—ensure compatibility with modern energy storage and mobility technologies.
With a wide current range of 5A to 800A and compliance with IEC60269 standards, this fuse offers outstanding reliability in compact, high-performance designs. Elehub’s commitment to innovation ensures every fuse is optimized for fast interruption and long operational life.
Specifications
| Specification | DATA |
|---|---|
| Rated Voltage: | AC/DC750V |
| Rated Current (A): | 5A~800A |
| Breaking Capacity: | AC100kA, DC50kA |
| Operation Class: | aR aBAT |
| Standard: | IEC60269 |
Dimension Drawing
Applications
The EFB750 series fuse delivers precise, rapid fault protection across a wide spectrum of high-power applications. Its flexibility and high-current rating make it ideal for:
Battery Energy Storage Systems (BESS)
Prevents cell damage by interrupting short circuits instantly.
Electric Vehicle Battery Packs
Offers high-speed protection for EV power systems and motor controllers.
Solar PV Inverters
Shields DC/AC converters in photovoltaic arrays from overcurrent events.
DC Fast Charging Stations
Ensures fault protection for high-current EV charging modules.
Industrial Power Control Panels
Protects sensitive IGBT-based motor drives and automation components.
UPS Backup Systems
Maintains system integrity in uninterruptible power supplies during faults.
Telecommunication Power Units
Guards rectifiers and DC bus lines from surges and shorts.
HVAC and HVACR Equipment
Secures inverter-based compressors and control electronics.
Why Choose Us as an Electric Vehicle Fuse Supplier?
EV-Focused Innovation
We design fuses specifically for electric vehicles, ensuring optimal protection and system compatibility.
Reliable Quality Standards
Our fuses meet international safety and performance certifications, guaranteeing consistent and reliable performance under extreme EV conditions.
Broad Product Range
From compact passenger EVs to heavy-duty electric trucks, we offer a wide variety of fuse models to match diverse applications.
Compact & Lightweight
Space-saving designs fit perfectly within EV architecture without compromising performance or durability.
OEM Customization
Support for custom designs and ratings tailored to specific EV platform requirements and standards.
Quick and Reliable Delivery
Streamlined production and logistics systems ensure fast, on-time delivery to meet urgent customer demands.
FAQs
What is the rated voltage of the EFB750 fuse?
The fuse supports AC and DC systems up to 750V, suitable for high-voltage industrial and energy applications.
What is the rated current range of the EFB750 series?
This fuse series ranges from 5A to 800A, with 400A being a standard high-demand option.
What does the aR and aBAT classification mean?
The aR class is designed for semiconductor protection, while aBAT offers dedicated protection for battery systems.
Is the EFB750 fuse compliant with international standards?
Yes, it complies with IEC60269, ensuring global compatibility and performance assurance.
Can the 400A Fast Acting Fuse be used in electric vehicles?
Absolutely. It’s ideal for protecting EV battery modules, inverters, and fast-charging circuits.
What is the DC breaking capacity of this fuse?
The EFB750 fuse offers a high DC breaking capacity of 50kA, ensuring safe interruption of large fault currents.
How fast does the fuse respond to overcurrent events?
It reacts within milliseconds to isolate the fault, protecting connected components from severe damage.
Is this fuse suitable for solar applications?
Yes, the EFB750 is ideal for solar inverters and DC combiner boxes in PV systems.
Recently Viewed Products
Stay updated on the latest innovations and trends in DC electrical components.
What Is a Solid-State Transformer: Architecture, Applications, and Its Impact on Power Distribution
A conventional transformer does one job well. It changes voltage through electromagnetic induction. Yet it…
Battery Precharge Circuit: Why It Matters and How It Works
There is a possibility that a battery pack may pass its voltage tests but still…