GFEVT500‑A‑74E Fast‑Acting DC Fuse 500‑1800A 500VDC | EssFuse
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Dimensions (mm)
GFEVT500‑A‑74E Series Square‑Body Fast‑Acting Fuse is Size‑3# square‑body fast‑acting high speed dc fuse specially designed for heavy‑duty new‑energy DC circuits. aR performance class, rated 500‑1800A 500VDC, max 50kA interrupting capacity, minimum breaking current ≥5In, time constant ≤5 ms. Adopts flush‑end contact structure. Features low watt‑loss, superior cycling capability, outstanding anti‑vibration & shock‑resistance ≥20g. RoHS compliant, REACH documentation available upon request. Widely used for large‑capacity battery pack, BESS energy‑storage cabinets and DC relay backup short‑circuit protection.
GFEVT500-A-74E-Series.-500-1800A-500Vdc-fast-acting-fuse
Product At A Glance
| Item | Parameter |
|---|---|
| Product Series | GFEVT500‑A‑74E Series, Size‑3# Square‑Body Fast‑Acting Fuse |
| Current Range | 500A‑1800A |
| Rated Voltage | 500VDC |
| Interrupting Capacity | 50kA @500VDC; Minimum breaking current ≥5In |
| Time Constant | ≤5 ms |
| Performance Class | aR (Semiconductor / power‑device backup short‑circuit protection) |
| Contact Type | Flush‑end contact |
| Standards | UL 248.1, UL248.13; IEC 60269‑1, IEC 60269‑4 |
| Compliance | RoHS compliant, REACH declaration available upon request |
Electrical Data @50kA 500VDC
| Part Number | Rated Amps | Melting A²s | Clearing A²t | 100% Power Loss(W) |
|---|---|---|---|---|
| GFEVT500‑500A‑74E | 500A | 12290 | 85500 | 95 |
| GFEVT500‑550A‑74E | 550A | 16900 | 121500 | 105 |
| GFEVT500‑630A‑74E | 630A | 26970 | 189000 | 115 |
| GFEVT500‑700A‑74E | 700A | 38715 | 270000 | 120 |
| GFEVT500‑800A‑74E | 800A | 60450 | 418500 | 130 |
| GFEVT500‑900A‑74E | 900A | 87000 | 603000 | 138 |
| GFEVT500‑1000A‑74E | 1000A | 121800 | 850500 | 145 |
| GFEVT500‑1100A‑74E | 1100A | 165300 | 1170000 | 165 |
| GFEVT500‑1250A‑74E | 1250A | 252300 | 1755000 | 180 |
| GFEVT500‑1400A‑74E | 1400A | 322500 | 2205000 | 190 |
| *GFEVT500‑1500A‑74E | 1500A | 400200 | 2790000 | 200 |
| *GFEVT500‑1600A‑74E | 1600A | 505600 | 3510000 | 230 |
| *GFEVT500‑1800A‑74E | 1800A | 765600 | 4925000 | 260 |
*Note: Models marked asterisk require prior communication with factory for availability.
Key Features & Benefits
- aR‑class Size‑3# square‑body fast‑acting DC fuse, low I²t characteristic, up to ten‑times faster opening under high fault‑current for semiconductor backup short‑circuit protection
- 50kA high interrupting capacity @500VDC, time constant ≤5 ms, minimum breaking current ≥5In
- Flush‑end contact construction; higher ampacity within compact dimensional outline, saving cabinet space and reducing overall system cost
- Low watt‑loss design, superior cycling performance, excellent thermal‑shock & wide‑range temperature tolerance
- High mechanical reliability, ≥20g anti‑vibration and shock‑resistance for harsh industrial & energy‑storage cabinet environments
- Supports full‑parameter derating correction for high‑temperature, high‑altitude and forced‑air‑cooling operating‑conditions
- Complies with UL 248.1‑13 & IEC 60269‑1‑4; RoHS compliant, REACH documents available for export‑oriented projects
Application Overview
GFEVT500‑A‑74E series square‑body high‑speed fuses are purpose‑built for large‑capacity new‑energy DC‑equipment. Mainly deployed for high‑power battery pack protection, BESS energy‑storage cabinets and DC relay backup short‑circuit protection.
Critical Tip: Long‑term continuous operating‑current shall ≤75% of fuse rated‑current. Apply temperature‑altitude‑forced‑air derating‑factors for enclosed‑cabinet installation. Always disconnect DC power before fuse replacement.
Installation & Operating Notes
- Select proper copper conductor cross‑section following datasheet specification to guarantee stable contact performance.
- Long‑term continuous working‑current cannot exceed 75% of nominal fuse ampere‑rating.
- Carry‑out current‑derating when ambient‑temperature＞40℃ or installation‑altitude＞2000 m under closed‑cabinet environment.
- Derating is also required for forced‑air cooling application, refer to official derating curves for correction‑coefficient.
- Permitted for vertical, horizontal or inclined mounting; avoid gravity‑vibration impact affecting contact reliability.
- Discard and replace fuse immediately if mechanical‑damage occurs; avoid live‑load fuse‑replacement unless equipment‑design explicitly permits.
Typical Applications
- Large‑capacity new‑energy battery‑pack over‑current & short‑circuit backup‑protection
- BESS utility‑scale energy‑storage‑system high‑power DC‑feeder protection
- DC relay and power‑semiconductor‑device backup short‑circuit‑protection
- Heavy‑duty 500VDC new‑energy converter‑inverter internal DC‑side protection
- High‑current industrial energy‑storage power‑distribution assemblies
Pair GFEVT500‑A‑74E series fuse with our matching heavy‑duty semiconductor fuse holders for complete heavy‑current DC‑protection assembly.
Safety Reminders
- Disconnect all DC‑power before servicing or changing fuses. Strictly prohibit live‑line 500VDC high‑voltage operation.
- Observe 75% rated‑current continuous‑working derating‑rule; extra‑derating required for high‑temperature / high‑altitude enclosed‑cabinet installation.
- Select fuse breaking‑capacity higher than prospective short‑circuit‑current of your system.
- Refer to official datasheet for I‑t curve, temperature‑altitude‑derating‑curves and dimension drawings before bulk‑procurement.
- Mechanically‑damaged fuse‑unit must be discarded and replaced immediately.
- Asterisk‑marked high‑current variants require factory pre‑confirmation before ordering.
FAQ
Q: What is GFEVT500‑A‑74E series high‑speed fuse?
A: GFEVT500‑A‑74E is Size‑3# square‑body aR‑class fast‑acting DC fuse, rating 500‑1800A @500VDC, 50kA interrupting‑capacity with flush‑end contact. Designed for large‑capacity battery‑pack and BESS energy‑storage backup‑protection, RoHS compliant, REACH available upon request.
Q: What is the rule for continuous‑current operation?
A: Long‑term operating‑current must be ≤75% of fuse rated‑current. Additional derating shall be applied for high‑temperature, high‑altitude enclosed‑cabinet and forced‑air‑cooling scenarios.
Q: What special notes for asterisk‑marked part‑numbers?
A: Models with asterisk (*) such as 1500A,1600A,1800A need prior technical communication with factory for lead‑time and availability confirmation.
Q: What standards does this series comply with?
A: Reference standards UL 248.1, UL248.13, IEC 60269‑1, IEC 60269‑4; RoHS compliant, REACH declaration can be provided for overseas‑export‑projects.
Q: Where is GFEVT500‑A‑74E commonly used?
A: Applied for large‑capacity battery‑pack protection, utility‑scale BESS cabinets, DC‑relay backup‑protection and heavy‑duty 500VDC converter‑inverter DC‑side circuits.
Request Quotation & Technical Support
Please provide target part‑number, order‑quantity, system short‑circuit‑current, ambient‑temperature and altitude‑conditions. For asterisk‑marked high‑current models, please confirm availability in advance. Our engineering‑team can deliver full datasheet, bulk‑price quotation and component‑selection‑guidance for large‑scale battery‑energy‑storage DC‑protection‑projects.
GFEVT500‑A‑74E Series High‑Speed Fuse · EssFuse. Confirm datasheet I‑t, derating and dimension specs before mass‑production.
