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By certification 
1. Introduction
This 5H38L Series DC automobile fuses are suitable for rated DC voltage up to 500V (450V), In the line with rated current up to 400A, the breaking capacity is 50kA, which is the comprehensive protection of on-board battery, on-board line system and inverter.
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
4. Structural characteristics
The melting tube of the product is made of high-temperature resistant ceramic material, 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. The contact surface is silver plated to ensure reliable electrical performance, greatly reducing temperature rise and power consumption; Both ends of the melt are firmly connected with the contact by spot welding, which greatly enhances the safety and reliability of breaking short circuit fault current.
Automotive vehicle fuse has the characteristics of strong current limiting capacity, high breaking capacity, fast short-circuit breaking speed, and it can withstand temperature shock, mechanical vibration shock, current shock, chemical load, etc. This series of products conforms to ISO 8820 and Jaso D622 and GB / T31465.Applicable standards for environmental reliability: GB/T31465.6, ISO 8820-8, JASO D622, UL248-20.
5. Agreed current and agreed time
Test current |
Fusing time s |
|
In:≥60A | ||
min |
max |
|
1.1In |
14400 |
|
1.35In |
150 |
3600 |
1.5In |
20 |
1500 |
2In |
1 |
300 |
3In |
0.2 |
30 |
5In |
0.05 |
1 |
Note: the agreed current and agreed time required by the customer can be negotiated with our company.
The characteristics of fuse will vary according to the use environment and surrounding design requirements. The performance characteristics are obtained according to the rated constant temperature of 25 ℃
6. Main parameters
NO: |
Product model |
Rated current |
Rated voltage DC |
Maximum voltage drop |
Breaking Capacity |
1 |
5H38L300 |
300 |
500V/450V |
129 |
50 |
2 |
5H38L350 |
350 |
500V/450V |
139 |
50 |
3 |
5H38L400 |
400 |
500V/450V |
117 |
50 |
7. Product scale
8. Characteristic curve
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