GFHVT1500‑74E 1500Vdc Fast‑Acting Fuse 100‑1250A aR 250kA
GFHVT1500‑74E square‑body DC fuse,1500Vdc,100‑1250A,aR 250kA interrupt. UL/IEC for BESS,battery pack & DC relay backup protection. Download datasheet.
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GFHVT1500‑74E Series 1500Vdc Fast‑Acting Square‑Body Fuse 100‑1250A
SKU Series：GFHVT1500‑74E｜Fuse Class：aR｜Voltage：1500V DC｜Current Range：100‑1250A｜Max Interrupt：250kA@1500Vdc
Product Overview
The GFHVT1500‑74E series is square‑body fast‑acting aR fuse links specially engineered for high‑energy DC circuits. Rated at 1500Vdc, this high‑current DC fuse covers ampere ratings from 100A up to 1250A, with maximum interrupting capacity up to 250kA at 1500Vdc and minimum breaking current ≥5×In.
Designed for energy‑storage and battery‑powered systems, it delivers outstanding DC fault‑clearing performance, low watt loss, high cycling endurance and strong vibration resistance. Three connection versions (B bolted, U DIN fork, K custom fork) support diverse cabinet installation requirements.
Key Features & Benefits
- ✅ Rated for 1500V DC, reduces conductor cost and improves overall system efficiency
- ✅ Fast‑acting response: up to 10× faster opening under high fault‑current for reliable component protection
- ✅ Class aR semiconductor protection fuse, time constant ≤5 ms
- ✅ High interrupting capacity: 250 kA @1500Vdc, minimum breaking current ≥5In
- ✅ Low power loss, superior cycling capability
- ✅ Wide temperature tolerance, excellent anti‑shock and anti‑vibration performance (≥20g vibration resistance)
- ✅ Three connection options: B bolted, U DIN‑fork, K custom fork mount
- ✅ RoHS compliant, REACH statement available upon request
- ✅ Complies with UL 248.1 / UL 248.13, IEC 60269‑1 / IEC 60269‑4
Main Electrical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 1500 Vdc |
| Rated Current Range | 100A‑1250A |
| Fuse Class | aR Fast‑acting |
| Max Interrupt Capacity | 250 kA @1500Vdc |
| Minimum Breaking Current | ≥5×In |
| Time Constant | ≤5 ms |
| Connection Types | B(Bolted), U(DIN fork), K(Custom fork) |
| Storage Temperature | -40 ℃ ~ +120 ℃ |
| Normal Operating Ambient | -5 ℃ ~ +40 ℃ |
| Allowable Operating Temperature | -40 ℃ ~ +85 ℃ |
Note: Ratings above 800A (900‑1250A) are subject to application confirmation; contact factory for technical support before ordering 1250A models.
Part Numbering Explanation
Example Model: GFHVT1500‑400B‑74E
| Code | Definition |
|---|---|
| GF | Manufacturer Code (GFEV) |
| HV | High‑Speed / Fast‑Acting |
| T | Ceramics Body |
| 1500 | Rated Voltage:1500Vdc |
| 400 | Rated Current(A) |
| B | Connection Type: B / U / K |
| 74E | Series Code |
Connection Types & Mechanical Dimensions
B‑Type：Bolted Connection（xxxB‑74E）
Long bar bolt horizontal mounting, heavy‑duty bolt terminals for high‑current cabinet application.
U‑Type：DIN Fork Connection（xxxU‑74E）
Standard DIN fork‑type blade terminals, horizontal installation.
K‑Type：Custom Fork Connection（xxxK‑74E）
Custom fork‑blade terminal for vertical mounting, project‑specific mechanical adaptation.
Full Part List Table
| Connect Type | Part Number | Rated Fuse Amps | Melting A²s | Clearing A²s | Power Loss 80%In(W) | Power Loss 100%In(W) | RoHS | REACH |
|---|---|---|---|---|---|---|---|---|
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑100X‑74E | 100A | 1150 | 4680 | 48 | 60 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑125X‑74E | 125A | 1750 | 8350 | 52 | 68 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑160X‑74E | 160A | 3800 | 14000 | 68 | 90 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑200X‑74E | 200A | 5200 | 23500 | 82 | 110 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑250X‑74E | 250A | 10400 | 45000 | 92 | 120 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑315X‑74E | 315A | 21238 | 76760 | 104 | 136 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑350X‑74E | 350A | 29180 | 104691 | 113 | 148 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑400X‑74E | 400A | 38468 | 136083 | 130 | 171 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑450X‑74E | 450A | 54749 | 192815 | 143 | 187 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑500X‑74E | 500A | 74371 | 259379 | 155 | 204 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑550X‑74E | 550A | 93073 | 317075 | 169 | 221 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑630X‑74E | 630A | 131578 | 437610 | 189 | 248 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑700X‑74E | 700A | 182476 | 593977 | 202 | 273 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑800X‑74E | 800A | 283377 | 893774 | 218 | 294 | ● | ● |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑900X‑74E | 900A | 408596 | 1247411 | 237 | 305 | ￮ | ￮ |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑1000X‑74E | 1000A | 546988 | 1605152 | 282 | 362 | ￮ | ￮ |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑1100X‑74E | 1100A | 751540 | 2129888 | 300 | 385 | ￮ | ￮ |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑1200X‑74E | 1200A | 991418 | 2779209 | 305 | 391 | ￮ | ￮ |
| Bolted‑B/Din‑U/Custom‑K | GFHVT1500‑1250X‑74E | 1250A | 1121162 | 3162024 | 314 | 401 | ￮ | ￮ |
Note: X replace with B/U/K. ●=Available; ￮=Application process to be determined; 1250A consult factory first.
Application Fields
- ⚡ Battery pack & Energy Storage System(BESS) main circuit protection
- ⚡ Backup short‑circuit protection for DC relays & DC contactors
- ⚡ Energy‑storage cabinet, DC busbar over‑current & short‑circuit protection
- ⚡ Maintenance safety disconnector / DC isolation application
- ⚡ High‑current DC industrial energy storage equipment
Standards & Certifications
| Standard / Certificate | Status |
|---|---|
| UL 248.1, UL 248.13 | Complied(≤800A) |
| IEC 60269‑1, IEC 60269‑4 | Complied(≤800A) |
| RoHS | Compliant |
| REACH | Declaration available upon request |
Note: Ratings 900‑1250A are pending full certification process, consult factory for project qualification.
Operating & Derating Conditions
Important: Recommended continuous operating current ≤75 % of fuse nominal rating under standard conditions.
Ambient Temperature Derating
Above 40 ℃ ambient temperature requires current derating according to the derating curve. Below ‑5 ℃, pre‑arcing time for low overload will extend slightly.
Altitude Derating
Normal working altitude ≤2000 m. For closed‑enclosure applications at altitude 2000‑4500 m: derate rated current 2‑5 % per 1000 m increase. Air insulation strength decreases at high altitude; check clearance per GB/T 16935.1.
Forced Air Cooling Correction
Forced ventilation improves heat dissipation and raises allowable continuous current. Refer to Kv correction curve versus wind speed(m/s).
Time‑Current Characteristic Curves
Two sets of TCC curves cover rating range 100‑800A and 900‑1250A. Curve tolerance: ±15 % on current axis. Minimum breaking current =5 × In.
Frequently Asked Questions
1: What is the minimum breaking current for GFHVT1500‑74E series?
1: Minimum breaking current is 5 times nominal rated current(5In).
2: Can GFHVT1500‑74E be used for lithium‑ion battery pack short‑circuit protection?
2: Yes. It is designed for battery pack and energy‑storage DC main‑circuit protection as aR fast‑acting fuse. Verify I²t coordination with your BMS.
3: What derating should I apply for high‑altitude closed cabinet installation?
3: For sealed cabinets above 2000 m altitude, derate 2‑5 % per 1000 m elevation; larger ampacity fuses adopt higher derating percentage.
4: What are the three connection codes B/U/K stand for?
4: B=Bolted long‑bar connection; U=DIN fork‑blade; K=custom fork‑blade for vertical mounting.
5: Are 900A‑1250A models fully certified?
5: 900‑1250A models certification process is ongoing. Please contact EssFuse engineering for project evaluation before specification.
Download Datasheet & Resources
📄 Download GFHVT1500‑74E Series Datasheet(PDF) GFHVT1500-74E-Series.-100-1250A-1500Vdc-IR.250kA fast-acting fuse-1
