GFEVT/750‑10R Bolt‑Down DC Fuse 750VDC 10‑50A | EV HEV High‑Speed Fuse
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GFEVT/750‑10R Bolt‑Down High‑Speed DC Fuse 700‑750VDC 10‑50A
Product Overview
GFEVT/750‑10R series are bolt‑mount high‑speed DC fuses, specially designed for over‑current and short‑circuit protection for EV & HEV DC power systems. Rated DC voltage 700V‑750V, current range 10A‑50A, with 20kA high DC breaking capacityGFEFUSE.
Bolt‑down terminal design provides anti‑vibration, reliable connection for automotive harsh environment. The series is manufactured under IATF16949 automotive quality system, compliant with IEC60269‑4, UL248‑13/20, JASO D622 and RoHS requirements. Customized service is available upon customer technical requirements.
Key Features & Construction
- Termination：Bolt‑down / bolt‑on mounting, M5 bolt recommended, install torque:4.5±1.0 N·m
- Tube material：10‑32A high‑strength ceramic body;40‑50A fiberglass body
- Excellent DC arc‑quenching performance, low I²t let‑through energy
- Low power loss, stable performance under vibration & shock automotive environment
- High cycling capability, suitable for frequent current fluctuation DC circuits
- RoHS & REACH compliant, automotive‑grade quality
Operating Conditions & Installation
- Ambient operating temperature：‑40℃ ~ +90℃
- Installation altitude：≤2000m; for altitude above 2000m, current derating is required, please consult engineering team.
- Mounting instruction：Use M5 bolt, tightening torque 4.5±1.0 N·m, avoid over‑torque damage to fuse terminals.
Main Technical Specifications
Electrical Rating Table
| No. | Model | Rated Current(A) | Breaking Capacity DC | Rated DC Voltage | Pre‑arcing I²t(A²s) | Total clearing I²t(A²s) | Power Loss(W) | Body Material |
|---|---|---|---|---|---|---|---|---|
| 1 | GFEVT750‑10A‑10R | 10 | 20kA | 700/750Vdc | 28.9 | 97.0 | 2.0 | Ceramic |
| 2 | GFEVT750‑15A‑10R | 15 | 20kA | 700/750Vdc | 72.3 | 242.5 | 2.5 | Ceramic |
| 3 | GFEVT750‑20A‑10R | 20 | 20kA | 700/750Vdc | 145.5 | 440.0 | 3.2 | Ceramic |
| 4 | GFEVT750‑25A‑10R | 25 | 20kA | 700/750Vdc | ‑ | ‑ | ‑ | Ceramic |
| 5 | GFEVT750‑30A‑10R | 30 | 20kA | 700/750Vdc | 311.3 | 942.0 | 4.5 | Ceramic |
| 6 | GFEVT750‑32A‑10R | 32 | 20kA | 700/750Vdc | 356.3 | 996.0 | 5.5 | Ceramic |
| 7 | GFEVT750‑40A‑10R | 40 | 20kA | 700/750Vdc | 439.6 | 1605.0 | 6.5 | Fiberglass |
| 8 | GFEVT750‑50A‑10R | 50 | 20kA | 700/750Vdc | 683.2 | 3048.5 | 8.5 | Fiberglass |
Note: Test reference condition 23.5℃ ambient temperature. Custom specifications acceptable.
Mechanical Dimension & Torque Requirement
- Overall dimension reference drawing insert here.
- Recommended fastener: M5 bolt, installation torque 4.5±1.0 N·m
Insert dimension drawing image with ALT tag.
Melting Characteristic Curve
Time‑current pre‑arcing curve shows fuse response performance under different prospective fault current, support precise selection for EV DC‑bus protection.
Insert melting‑curve chart image with ALT tag.
Typical Applications
- EV / HEV lithium‑ion battery pack short‑circuit & overcurrent protection
- On‑board charger OBC, auxiliary power unit
- DC‑link circuit protection for new energy vehicles
- Light‑duty commercial vehicle DC power system
- Energy storage auxiliary DC circuit protection
- Other vibration‑prone high‑voltage DC equipment requiring bolt‑mount fuse
Standards & Compliance
- IEC Standard：IEC60269‑4
- UL Standard：UL248‑13, UL248‑20
- Automotive Standard：JASO D622
- Environmental：RoHS, REACH compliant
FAQ
1: Why bolt‑down terminal for EV DC fuse?
A: Bolt‑down connection delivers stable low‑resistance contact under vehicle vibration and shock, avoiding loose connection risk compared with clip‑type fuses, critical for automotive applications.
2: Need current derating for high‑altitude installation?
A: Yes. When installation altitude over 2000 m, heat dissipation degrades. Contact our engineering team for derating suggestion.
3: What torque should I apply for M5 mounting bolt?
A: Recommended tightening torque: 4.5±1.0 N·m. Too high torque will crack terminal; insufficient torque will result in overheating.
Customization & Support
We offer custom development for special dimensions, I²t characteristics and special working condition. Please send your technical requirement sheet for quotation. Download Datasheet ｜Request Sample ｜Contact Us
GFEVT750-10R-10x38mm750V-10-50A-Fast-Acting-Fuse
