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EFS-18 | 32A 500VDC 50kA aR Fast Acting Fuse
The EFS-18 32A 50kA Fast Acting Fuse by ELEHUB is purpose-built for the protection of sensitive semiconductor components in both AC and DC circuits. Rated for 690VAC and 500VDC, this aR-class fuse offers high-speed response during short-circuit events, minimizing equipment damage and downtime. With breaking capacities of 80kA AC and 50kA DC, it ensures dependable circuit isolation in mission-critical applications.
Compliant with IEC60269-4 standards and available in current ratings from 20A to 630A, the EFS-18 class aR fuse is ideal for compact systems requiring maximum fault interruption and protection accuracy.
Specifications
| Specification | DATA |
|---|---|
| Rated Voltage: | AC690V / DC500V |
| Rated Current (A): | 20A~630A |
| Breaking Capacity: | AC80kA, DC50kA |
| Operation Class: | aR |
| Standard: | IEC60269-4 |
Dimension Drawing
Dimension Data
Applications
The EFS-18 class aR fuse is suitable for a wide range of AC and DC applications where fast fault isolation and high reliability are essential. Common application scenarios include:
Semiconductor Protection
Protects IGBTs, MOSFETs, and thyristors from high-energy surges.
Battery Energy Storage Systems (BESS)
Prevents damage in large-capacity battery banks.
DC Fast Charging Stations
Ensures secure protection in EV charging infrastructure.
UPS and Backup Power Systems
Maintains circuit integrity during overload or short-circuit.
Photovoltaic (PV) Inverters
Delivers high-speed protection in solar energy systems.
Industrial Motor Drives
Safeguards VFDs and soft starters in AC drive systems.
Medical Equipment
Provides stable circuit protection for precision diagnostic devices.
Telecom and Data Centers
Protects power modules in high-density DC installations.
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-18 class aR fuse?
It is rated for 690VAC and 500VDC, making it suitable for both AC and DC applications.
What does the 50kA rating mean?
It refers to the DC breaking capacity of the fuse—50,000 amps of fault current interruption.
What is the purpose of aR operating class?
The aR class is designed to protect semiconductor devices by rapidly clearing short circuits, but not designed to handle overloads.
Is the EFS-18 certified to international standards?
Yes, it complies with IEC60269-4, which governs fuses for semiconductor protection.
What current ratings are available for the EFS-18 fuse?
It supports a wide range from 20A to 630A, suitable for diverse system requirements.
Can this fuse be used in EV applications?
Yes, it’s ideal for electric vehicle onboard chargers and DC fast charging protection.
What’s the difference between AC and DC breaking capacities?
AC breaking capacity is 80kA, while DC is 50kA. This shows the fuse’s performance under different current types.
Can I use this fuse in solar energy systems?
Absolutely. Its fast-acting nature makes it well-suited for PV inverters and solar controllers.
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