HIITIO HCHVF1000 High-Voltage DC Main Fuse

The HIITIO HCHVF1000 High-Voltage DC Main Fuse is a heavy-duty, ultra-fast-acting circuit protection device engineered for the extreme demands of electric vehicles (EVs), motor drive inverters, and high-capacity renewable energy systems. Rated for 250 Amps at 1000 Volts DC, this cylindrical tube fuse operates under the "aR" class, meaning it is specifically optimized to provide lightning-fast short-circuit protection for sensitive power semiconductors like IGBTs and MOSFETs.

Key Specifications:

• Category: Automotive Parts & Accessories / EV High Voltage Components / Fuses & Circuit Breakers

• Product Type: High-Voltage DC Semiconductor Fuse (Fast-Acting / aR Class)

• Manufacturer: HIITIO

• Model / Part Number: HCHVF1000 (Size/Series: 38R)

• Current Rating: 250 Amps (250A)

• Maximum Voltage Rating: 1000V DC

• Interrupting Rating (Breaking Capacity): 50kA (50,000 Amps)

• Mounting Type: Center-bolted tags / Flat blade terminals

• Certifications: CE, RoHS Compliant

• Body Material: High-strength, thermal-resistant fiberglass/ceramic composite

Key Features:

• aR Class Semiconductor Protection – Unlike general-purpose fuses, this unit is ultra-fast acting. It is explicitly designed to clear massive DC short circuits in milliseconds, preventing catastrophic heat damage to the expensive power electronics inside EV motor controllers and inverters.

• 1000V DC Capability – Purpose-built for modern 800V+ EV architectures and high-voltage grid-tied systems, safely breaking high-energy direct current arcs.

• Massive 50kA Breaking Capacity – Can safely absorb and extinguish dead-short fault currents up to a staggering 50,000 Amps without the outer casing rupturing or catching fire.

• Arc-Extinguishing Construction – The high-strength cylindrical tube is tightly packed with specialized, high-purity silica sand that instantly melts into glass during a blown-fuse event, safely suffocating the violent electrical arc.

• Vibration-Proof Bolted Design – Features thick, solid metal blade terminals with pre-cut holes. This provides massive surface area contact for heavy-gauge copper busbars, ensuring secure, low-resistance power transfer that won't vibrate loose on the road.

Ideal For:

• Main traction battery disconnects and drive inverter protection in heavy-duty Electric Vehicles

• High-performance EV conversions running on 800V+ architectures

• Megawatt-scale Solar (PV) inverters and grid-tied combiner boxes

• Commercial Battery Energy Storage Systems (BESS)

• High-power DC Fast Charging (DCFC) station infrastructure

Note: Shipping charges are not included and will be calculated separately based on the quantity, weight, and destination of the selected product(s).