High‑Speed Fuse GFEVT500‑B‑43E 50‑630A 500VDC Semiconductor Fuse
GFEVT500‑B‑43E square high‑speed 500Vdc aR semiconductor fuse,50‑630A fast‑acting DC fuse,50kA interrupt rating,UL248‑1 & IEC60269‑4 certified for battery‑pack,energy‑storage and DC relay backup protection.
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Dimensions (mm)
GFEVT500-XXXB-43E
GFEVT500-XXXBN-43E
GFEVT500‑B‑43E High‑Speed Fuse 50A‑630A 500V DC Semiconductor Fuse
Our High‑Speed Fuse model GFEVT500‑B‑43E is square‑body fast‑acting aR‑class DC semiconductor fuse for 500Vdc battery‑powered systems, rated current from 50A‑630A. It features 50kA high interrupting capacity, low watt‑loss, superior cycling capability. Two versions available: B‑version with fuse indicator, BN‑version without indicator. UL248‑1 / UL248‑13 & IEC60269‑1 / IEC60269‑4 compliant. Widely deployed for battery‑pack, energy‑storage, DC relay backup and power‑electronics short‑circuit & over‑current protection.
Main Electrical Ratings & Key Specifications
| Item | Parameter |
|---|---|
| Product Series Model | GFEVT500‑B‑43E / GFEVT500‑BN‑43E |
| Rated Voltage | 500 Vdc |
| Rated Current Range | 50A ~ 630A , Size 01* |
| Interrupting Capacity | 50kA@500Vdc (L/R ≤2ms) |
| Fuse Class | aR (partial‑range semiconductor protection) |
| Minimum Breaking Current | ＞3 In |
| Characteristic | Fast‑Acting High‑Speed DC Semiconductor Fuse, low watt loss |
| Indicator Option | B = with indicator; BN = without indicator |
| Certifications & Standards | UL248‑1, UL248‑13, IEC60269‑1, IEC60269‑4, RoHS Compliant; REACH statement upon request |
| Operating Temperature | ‑40℃ ~ +85℃; Standard working:‑5℃ ~ +40℃ |
| Typical Application | Battery‑pack,energy‑storage,DC relay backup protection,power‑electronics short‑circuit protection |
Complete Model List | Melting / Clearing I²t & Power‑Loss Data
| Part Number | Rated Amps | Size | Melting A²s @50kA | Clearing A²s @50kA | Power Loss(W) |
|---|---|---|---|---|---|
| GFEVT500‑50B‑43E | 50A | 01* | 126 | 995 | 9 |
| GFEVT500‑63B‑43E | 63A | 01* | 212 | 1,679 | 13 |
| GFEVT500‑80B‑43E | 80A | 01* | 345 | 2,699 | 17 |
| GFEVT500‑100B‑43E | 100A | 01* | 640 | 5,020 | 19 |
| GFEVT500‑125B‑43E | 125A | 01* | 1,135 | 8,940 | 23 |
| GFEVT500‑160B‑43E | 160A | 01* | 1,920 | 15,135 | 29 |
| GFEVT500‑200B‑43E | 200A | 01* | 3,480 | 27,383 | 36 |
| GFEVT500‑250B‑43E | 250A | 01* | 5,770 | 45,210 | 44 |
| GFEVT500‑315B‑43E | 315A | 01* | 9,760 | 76,920 | 55 |
| GFEVT500‑350B‑43E | 350A | 01* | 13,840 | 108,450 | 58 |
| GFEVT500‑400B‑43E | 400A | 01* | 19,280 | 151,350 | 65 |
| GFEVT500‑450B‑43E | 450A | 01* | 25,900 | 203,500 | 72 |
| GFEVT500‑500B‑43E | 500A | 01* | 33,450 | 262,500 | 80 |
| *GFEVT500‑550B‑43E | 550A | 01* | 45,040 | 352,800 | 85 |
| *GFEVT500‑630B‑43E | 630A | 01* | 65,500 | 497,500 | 97 |
*Note: 550A / 630A models are special‑order items, please confirm with factory before ordering. BN‑suffix version (without indicator) is available for all ratings.
Mechanical Dimension
Square‑body size 01* compact construction. Overall dimension 86±2.5 mm ×71±2.5 mm. Bolt‑type terminal connection. Tin‑plated contact terminals. Please check dimension drawing for full mechanical specifications.
Derating & Installation Instructions
- Recommended continuous operating current ≤ 75% of fuse rated‑current under standard‑5℃~40℃ ambient environment.
- For ambient temperature above 40℃, apply temperature‑derating factor Kt. For closed‑cabinet installation at altitude 2000‑4500 m, apply altitude‑derating Ka: derate 2‑5% per 1000‑meter elevation; open‑air deployment normally ignores altitude‑derating.
- Support vertical, horizontal and inclined mounting. Avoid gravity and vibration side‑effects for spring‑contact structures.
- Terminal contact resistance shall be kept low to prevent extra over‑heating and power‑loss rise.
Typical Applications
- Battery‑pack short‑circuit & over‑current protection
- Small‑scale energy‑storage DC circuit protection
- DC relay backup protection
- Power‑electronics and semiconductor equipment short‑circuit protection
Download Datasheet
GFEVT500-B-43E-Series.-01.-50-630A-500Vdc-fast-acting-fuse
Frequently Asked Questions
- What is rated voltage of GFEVT500‑B‑43E series?
- This high‑speed semiconductor fuse is rated for 500Vdc, designed for DC‑only circuits, not intended for AC‑system usage.
- What current ratings are available?
- 50A,63A,80A,100A,125A,160A,200A,250A,315A,350A,400A,450A,500A;550A & 630A are special‑order(SIZE 01*). B(with indicator),BN(without indicator) options for all ratings.
- What is its interrupting capacity and fuse class?
- Interrupting capacity:50kA@500Vdc(L/R ≤2ms); fuse class aR; minimum breaking current＞3 In.
- What standards and certifications apply?
- Designed per UL248‑1,UL248‑13 & IEC 60269‑1,IEC60269‑4; RoHS‑compliant; REACH declaration can be supplied upon request.
- What is the rule for continuous‑current selection?
- Keep continuous working current ≤ 75% of fuse rated‑ampere under‑5℃~40℃ standard ambient.
- Must I derate for high‑temperature or high‑altitude?
- Yes. Above 40℃ apply temperature‑derating Kt. For closed‑box installation 2000‑4500 m altitude derate 2‑5% /1000 m; open‑air application generally skips altitude‑derating.
- Can I install this fuse horizontally or inclined?
- Vertical, horizontal and inclined mounting are allowed. Prevent gravity and vibration from degrading spring‑contact electrical connections.
- What are main target‑applications?
- Battery‑pack, small energy‑storage,DC relay backup, power‑electronics and semiconductor equipment DC short‑circuit protection.
- Can I replace the fuse under live‑load?
- Do NOT replace fuse while carrying live‑load unless a matched fuse‑disconnector switch assembly is implemented.
- What are the storage conditions?
- Store in original package:‑40℃~+85℃, RH ≤70% at 40℃, dust‑free warehouse environment.
