1H20E DC Fast-Acting Fuse | 50A-400A 250V/300V Fuse

Description

 1H20E DC Fast-Acting Fuse – 50A-400A 250V/300V High Speed Protection

Introduction to 1H20E DC Fast-Acting Fuse

 Product Specifications

• Model: 1H20E
• Current Range: 50A, 63A, 80A, 100A, 160A, 200A, 250A, 300A, 400A
• Rated Voltage: 250V DC, 300V DC
• Characteristic: DC Fast-Acting
• Design: Cylindrical ceramic structure
• Application: EV, ESS, industrial DC power system
• Safety Standard: IEC & UL certified

 Core Advantages

1. Fast-acting response, instant cut off DC short-circuit current
2. Wide 50A-400A current coverage for medium-high power DC systems
3. Stable operation under 250V / 300V DC working environment
4. Low power loss, suitable for long-term continuous DC operation
5. Shockproof and high-temperature resistant, long service life

 Main Applications

• New energy vehicle DC power circuits
• Energy storage system DC distribution protection
• 250V/300V industrial DC power supplies
• Battery pack and DC load overcurrent protection
• Automotive engineering machinery DC equipment

FAQ

Full Product Description

Key Features

• Voltage Rating: 250V DC / 300V DC
• Current Range: 50A – 400A
• Fast-acting (aR) semiconductor protection type
• Excellent current-limiting performance
• High breaking capacity and reliable protection
• High-strength ceramic tube, flame-retardant and durable
• Low power loss and high thermal stability
• Bolt-down mounting for secure connection
• RoHS compliant, suitable for industrial applications

Applications

• DC power supply systems
• UPS and backup power supplies
• Inverters and converters
• Communication base station power
• Industrial control equipment
• Power electronic devices
• Battery circuit protection
• Electrical control cabinets

Why Choose EssFuse?

1H20E DC Fuse 50A-400A 250V300V fast-acting fuses

1. Purpose and use

This series of fuses are applicable to rated DC voltage (125V / 150V), AC 300V, rated current 50A-400A and high sectioning capacity (50kA AC / 20kA DC). It is widely used in semiconductor protection, mobile forklift, electric elevator, charger, power supply, on-board battery, on-board circuit system and inverter integrated protection. At the same time, it has the characteristics of strong current limiting capacity, large breaking capacity and fast short-circuit breaking speed. Can withstand temperature shock, mechanical shock, current shock, chemical load, etc. Performance reference UL248-13.

2. Normal working conditions

Normal operating conditions of ambient air temperature: -5 ℃ ~ 40 ℃; allowable operating conditions: -40 ℃ ~ +125 ℃;

3. Use category

Full range fast fuse (aR)

4. Structural characteristics

The melting pipe of the product is made of high-temperature resistant ceramic materials, with high flame retardant performance and strong hardness.

The melt is sealed in the melting tube with a variable cross-section melt made of 99.99% pure silver. The melting tube is filled with chemically treated high-purity quartz sand and specially treated chemical materials as arc extinguishing medium. Silver plating on the contact surface ensures reliable electrical performance and reduces temperature rise and power consumption; Both ends of the melt are firmly connected with the contact through spot welding, which improves the safety and reliability of breaking short-circuit fault current.

5. Main parameters