Description
7H30L Fast-Acting Fuse – 50A-250A 750V 800V High Voltage DC Protection
Introduction to 7H30L Fast-Acting Fuse
It covers current rating 50A to 250A, featuring ultra-fast fusing response to protect sensitive DC power devices from short-circuit risks.
Product Specifications
- Model: 7H30L
- Current Range: 50A, 63A, 80A, 100A, 125A, 160A, 200A, 250A
- Rated Voltage: 750V DC, 800V DC
- Characteristic: Fast-Acting / High Speed
- Application: EV, HEV, Energy Storage, High Voltage DC Equipment
- Standard: IEC, UL automotive & industrial fuse standards
Core Advantages
- Fit 750V/800V high-voltage new energy mainstream platform
- 50A-250A wide current coverage for medium-high power DC circuits
- Fast-acting cutoff, reduce damage to batteries and controllers
- Anti-vibration & high-temperature resistance for vehicle working conditions
- Compact structure, easy installation and circuit layout
Application Scenarios
- 800V high voltage platform electric vehicles
- New energy vehicle auxiliary high voltage DC circuit
- Energy storage system high voltage DC distribution
- 750V/800V industrial high-power DC power supply
- Renewable energy and new energy engineering equipment
FAQ
A: 7H30L is fast-acting high voltage fuse for 50A-250A, 750V/800V DC short circuit and overcurrent protection.
A: Yes, it is specially designed for 750V and 800V high voltage electric vehicle DC systems.
7H30L 50A-250A 750V/800V Fast-acting Fuse
1. 7H30L Series DC automobile fuse
This series fuse is applicable to the rated DC voltage of 800V (750V) below, in the rated current of 50A-250A line, the breaking capacity is 50KA, widely used in the charger. Charging pile, vehicle-mounted battery, vehicle-mounted circuit system and integrated protection of inverter. At the same time, it has the characteristics of strong current limiting capacity, large breaking capacity, short circuit breaking speed and so on. It can withstand temperature shock, mechanical vibration shock, current shock, chemical load and so on. This series of products comply with ISO 8820, JASO D622 and GB/T31465 standards. Environmental reliability applicable standards: GB/T31465.6, ISO 8820-8, JASO D622, UL248-20
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（gR）
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.
5. Agreed current and agreed time
| Test Current (A) | Fusing Time (s) | |||
|---|---|---|---|---|
| In < 60A | In ≥ 60A | |||
| Min | Max | Min | Max | |
| 1.1In | 14400 | – | 14400 | – |
| 1.35In | 150 | 3600 | 150 | 3600 |
| 1.5In | – | – | 20 | 1500 |
| 2In | 0.5 | 100 | 1 | 300 |
| 3In | 0.1 | 15 | 0.2 | 30 |
| 5In | 0.05 | 1 | 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 (A) | Rated Voltage DC (V) | Max Voltage Drop (mV) | Breaking Capacity (KA) |
|---|---|---|---|---|---|
| 1 | 7H30L50 | 50 | 800V / 750V | 200 | 50 |
| 2 | 7H30L60 | 60 | 800V / 750V | 180 | 50 |
| 3 | 7H30L70 | 70 | 800V / 750V | 180 | 50 |
| 4 | 7H30L80 | 80 | 800V / 750V | 180 | 50 |
| 5 | 7H30L100 | 100 | 800V / 750V | 180 | 50 |
| 6 | 7H30L125 | 125 | 800V / 750V | 180 | 50 |
| 7 | 7H30L150 | 150 | 800V / 750V | 180 | 50 |
| 8 | 7H30L175 | 175 | 800V / 750V | 180 | 50 |
| 9 | 7H30L200 | 200 | 800V / 750V | 180 | 50 |
| 10 | 7H30L225 | 225 | 800V / 750V | 180 | 50 |
| 11 | 7H30L250 | 250 | 800V / 750V | 180 | 50 |