Description
H14FE 40A-60A 450V/500V high-speed fuse / new energy vehicle fuse
1. Purpose and Use
This series of fuse is suitable for rated DC (450V–500V), 40A–60A line protection. It provides comprehensive protection for instrument power supply, on-board systems, chargers, and wiring harnesses. It offers strong current limiting, high breaking capacity, and fast short-circuit response. Withstands thermal, mechanical, current, and chemical stress. Breaking capacity: DC 20KA.
This product complies with ISO 8820, JASO D622, GB/T 31465, ISO 8820-8, UL248-20.
2. Normal Working Conditions
Ambient temperature range for normal use: -40℃ to +125℃
3. Use Category
“gR” indicates a fast-acting fuse for full-range protection.
4. Structural Features
The fuse tube is made of high-temperature, flame-retardant materials. The fuse element is 99.99% pure silver, embedded in high-purity quartz sand and arc-suppressing chemical agents. Contact terminals are silver-plated for conductivity and heat reduction. Ends are spot welded for enhanced safety and reliability.
5. Agreed Current and Time
Note: These can be customized based on customer agreement.
| Test Current (A) | In < 60A Fusing Time (s) |
In ≥ 60A Fusing Time (s) |
||
|---|---|---|---|---|
| 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 |
6. Main Parameters
| No. | Model Number | Rated Current (A) | Rated Voltage (VDC) | Breaking Capacity (DC) |
|---|---|---|---|---|
| 1 | H14FE40 | 40A | 450V / 500V | 20kA |
| 2 | H14FE45 | 45A | 450V / 500V | 20kA |
| 3 | H14FE50 | 50A | 450V / 500V | 20kA |
| 4 | H14FE60 | 60A | 450V / 500V | 20kA |
Note: Customization available as per customer requirements.
Core Specifications
- Model: H14FE
- Current Rating: 40A, 50A, 60A
- Voltage Rating: 450V DC / 500V DC
- Protection Class: aR (ultra‑fast semiconductor protection)
- Breaking Capacity: 20kA (DC)
- Body Style: Compact cylindrical, high‑vibration resistant
- Terminals: Bolt‑down (M5/M6), tin‑plated copper
- Arc Extinguishing: High‑purity silica sand filling, forced DC arc quenching
- Certifications: UL 248‑1, IEC 60269‑4, RoHS compliant
Key Features
✅ Ultra‑Fast aR Protection
✅ 450V/500V DC EV Standard
✅ 40A–60A Mid‑Current Coverage
✅ Compact & Vibration‑Resistant
✅ Superior DC Arc Extinguishing
✅ Low Temperature Rise
Common Applications
- Electric Vehicles (EV/HEV): Motor controller, on‑board charger (OBC), high‑voltage distribution unit (PDU), auxiliary battery circuits
- Energy Storage (BESS): 450V/500V DC battery systems, PCS auxiliary circuits
- Industrial DC: 450V/500V DC power supplies, small‑scale rectifiers
Installation & Torque
- Mounting: Secure via M5/M6 bolt terminals (torque: 5–8 Nm).
- Cable Connection: Use 16–25mm² DC cables; ensure clean, tight contact.
- Orientation: Install vertically or horizontally; avoid covering arc vent areas.