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EFS-18D | 32A 150VDC 50kA aR Fast Acting Fuse
The EFS-18D 32A 50kA Fast Acting Fuse is a compact, high-performance DC protection component designed for electric vehicles and high-efficiency DC systems. Manufactured by Elehub, this fuse operates at a rated voltage of 500VDC and is available in current ratings from 20A to 450A. With a DC breaking capacity of 50kA and an operating class, it offers rapid fault clearing to protect sensitive power electronics.
Compliant with IEC60269-4, the aR type fuse ensures safe and reliable operation under extreme short-circuit conditions, making it ideal for e-mobility, battery systems, and other fast-response DC applications.
Specifications
| Specification | DATA |
|---|---|
| Rated Voltage: | 240VAC / 150VDC |
| Rated Current (A): | 20A~450A |
| Breaking Capacity: | AC80kA, DC50kA |
| Operation Class: | aR |
| Standard: | IEC60269-4 |
Dimension Drawing
Dimension Data
Applications
The EFS-18Dv aR type fuse is optimized for use in DC circuits where high-speed protection is critical. Its robust structure and advanced interruption capabilities make it an essential component for EV and industrial applications:
Electric Vehicles (EVs)
Protects onboard inverters, battery systems, and fast-charging components.
Battery Management Systems
Prevents overcurrent damage in high-capacity battery arrays.
DC/DC Converters
Offers fast-acting short-circuit protection in high-efficiency conversion systems.
Onboard Chargers (OBC)
Ensures safety during high-voltage charging cycles.
Power Distribution Units (PDUs)
Protects against localized faults in electric drivetrain systems.
E-Mobility Infrastructure
Secures power electronics in e-buses, forklifts, and electric trucks.
Energy Storage Systems (ESS)
Enhances fault protection in modular lithium battery cabinets.
Industrial Automation
Used in DC control panels and high-voltage drive systems requiring ultra-fast response.
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 EFS-18D aR type fuse?
It is rated for 500VDC, ideal for medium to high-voltage DC applications in electric mobility and energy storage.
What is the breaking capacity of this fuse?
The EFS-18D offers a DC breaking capacity of 50kA and AC breaking capacity of 80kA, ensuring high fault current interruption performance.
What does aR class mean for this fuse?
The aR operating class means it provides fast-acting protection specifically for semiconductor devices and power electronics, especially in short-circuit conditions.
What current ranges are available for this fuse?
The fuse is available in a wide range from 20A to 450A, accommodating diverse protection needs.
Is the EFS-18D suitable for electric vehicle applications?
Yes. It is purpose-built for electric vehicles, protecting essential components such as batteries, chargers, and converters.
Is this fuse compliant with international standards?
Yes. It complies with IEC60269-4, a standard for fuse-links for the protection of semiconductor devices.
Can this fuse be used in energy storage applications?
Absolutely. The EFS-18D is widely applied in lithium-ion energy storage systems for short-circuit protection.
Does the fuse offer both AC and DC protection?
Yes, it offers AC protection up to 80kA and DC protection up to 50kA, enhancing its versatility.
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