GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 500VDC 500‑1800A
GFEVT500‑N‑74E square‑body fast‑acting aR DC fuse,500VDC 500‑1800A,50kA breaking capacity. Two terminal versions: BN‑flat bolted / UN‑din hook‑fork, no fuse indicator.
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Dimensions (mm)
Bolted xxxB-74E Dimensions
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GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 500VDC 500‑1800A
GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 500VDC 500‑1800A is Size 3# square‑body fast‑acting aR‑class DC fuse for heavy‑current new‑energy DC‑system applications. Rated voltage 500VDC, max breaking capacity 50kA@500VDC(time constant ≤5ms), minimum breaking current ≥5In. Two mechanical terminal styles without fuse indicator: BN‑type flat bolted connection; UN‑type DIN hook‑fork customized connection. Features superior cycling capability, low watt losses, excellent anti‑voltaic impingement, wide ambient temperature tolerance, good mechanical shock & vibration resistance. Performance referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS compliant, REACH declaration available upon request. Reliable short‑circuit protection for large‑capacity energy‑storage systems, lithium‑ion battery‑pack and DC relay backup applications.
GFEVT500-N-74E-Series.-500-1800A-500Vdc-fast-acting-fuse
Key Features
- Model Series: GFEVT500‑N‑74E Square‑Body Fast‑Acting aR DC Fuse
- Rated Voltage:500 VDC
- Current Range:500A‑1800A, Operation Class:aR (semiconductor / DC short‑circuit protection)
- Max Breaking Capacity:50kA @500VDC (Time Constant ≤5ms)
- Minimum Breaking Current:≥5 In
- Two terminal options without indicator: BN‑flat bolted terminals; UN‑DIN hook‑fork customized terminals
- Superior cycling capability, low watt‑loss performance
- Fast fault‑current interruption, excellent anti‑voltaic impingement, wide ambient temperature tolerance
- Size 3# square‑body construction
- Good mechanical shock & vibration resistance for industrial cabinet environment
- Compliant:Referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS; REACH available upon request
General Technical Specifications
| Product Series | GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse |
| Rated Voltage | 500 V DC |
| Rated Current Range | 500A‑1800A (aR operation class) |
| Max Breaking Capacity | 50kA @500VDC (Time Constant ≤5ms) |
| Minimum Breaking Current | ≥3 In |
| Mechanical Size | Size 3# square‑body, no fuse blow indicator |
| Terminal Versions | BN‑flat bolted; UN‑DIN hook‑fork customized |
| Standards & Approvals | Referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS |
| Operating Temperature | ‑5℃ ~ +40℃(regular);‑40℃~+85℃(allowable) |
| Storage Temperature | ‑40℃ ~ +120℃ |
Part Number List & Electrical Parameters(Test@500VDC,50kA,Time‑Constant≤5ms)
| Part Number | Rated Current | Terminal Type | Pre‑Arcing I²t (A²s) | Clearing I²t (A²s) | Power Loss(W) @1.0In | Body Size |
| GFEVT500‑500BN‑74E | 500A | BN‑bolted | 12290 | 85500 | 95 | 3# |
| GFEVT500‑550BN‑74E | 550A | BN‑bolted | 16900 | 121500 | 105 | 3# |
| GFEVT500‑630BN‑74E | 630A | BN‑bolted | 26970 | 189000 | 115 | 3# |
| GFEVT500‑700BN‑74E | 700A | BN‑bolted | 38715 | 270000 | 120 | 3# |
| GFEVT500‑800BN‑74E | 800A | BN‑bolted | 60450 | 418500 | 130 | 3# |
| GFEVT500‑900BN‑74E | 900A | BN‑bolted | 87000 | 603000 | 138 | 3# |
| GFEVT500‑1000BN‑74E | 1000A | BN‑bolted | 121800 | 850500 | 145 | 3# |
| GFEVT500‑1100BN‑74E | 1100A | BN‑bolted | 165300 | 1170000 | 165 | 3# |
| GFEVT500‑1250BN‑74E | 1250A | BN‑bolted | 252300 | 1755000 | 180 | 3# |
| GFEVT500‑1400BN‑74E | 1400A | BN‑bolted | 322500 | 2205000 | 190 | 3# |
| *GFEVT500‑1500BN‑74E | 1500A | BN‑bolted | 400200 | 2790000 | 200 | 3# |
| *GFEVT500‑1600BN‑74E | 1600A | BN‑bolted | 505600 | 3510000 | 230 | 3# |
| *GFEVT500‑1800BN‑74E | 1800A | BN‑bolted | 765600 | 4925000 | 260 | 3# |
| GFEVT500‑500UN‑74E | 500A | UN‑hook‑fork | 12290 | 85500 | 95 | 3# |
| GFEVT500‑550UN‑74E | 550A | UN‑hook‑fork | 16900 | 121500 | 105 | 3# |
| GFEVT500‑630UN‑74E | 630A | UN‑hook‑fork | 26970 | 189000 | 115 | 3# |
| GFEVT500‑700UN‑74E | 700A | UN‑hook‑fork | 38715 | 270000 | 120 | 3# |
| GFEVT500‑800UN‑74E | 800A | UN‑hook‑fork | 60450 | 418500 | 130 | 3# |
| GFEVT500‑900UN‑74E | 900A | UN‑hook‑fork | 87000 | 603000 | 138 | 3# |
| GFEVT500‑1000UN‑74E | 1000A | UN‑hook‑fork | 121800 | 850500 | 145 | 3# |
| GFEVT500‑1100UN‑74E | 1100A | UN‑hook‑fork | 165300 | 1170000 | 165 | 3# |
| GFEVT500‑1250UN‑74E | 1250A | UN‑hook‑fork | 252300 | 1755000 | 180 | 3# |
| GFEVT500‑1400UN‑74E | 1400A | UN‑hook‑fork | 322500 | 2205000 | 190 | 3# |
| *GFEVT500‑1500UN‑74E | 1500A | UN‑hook‑fork | 400200 | 2790000 | 200 | 3# |
| *GFEVT500‑1600UN‑74E | 1600A | UN‑hook‑fork | 505600 | 3510000 | 230 | 3# |
| *GFEVT500‑1800UN‑74E | 1800A | UN‑hook‑fork | 765600 | 4925000 | 260 | 3# |
Application Scenarios
GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 500VDC 500‑1800A applies to heavy‑current DC new‑energy projects. Suitable for large‑capacity energy‑‑storage power‑station cabinets, high‑capacity battery‑pack protection and DC relay backup short‑circuit protection. aR‑class fast‑acting characteristic offers reliable fault‑current protection for power semiconductors and high‑power DC‑side power components.
Installation & Operating Notes
- Size 3# square‑body without blow indicator; choose BN‑flat bolted or UN‑DIN hook‑fork terminal version according to cabinet layout; apply specified bolt torque to avoid poor contact and over‑heating risk.
- Recommended continuous operating current ≤75% of fuse rated‑current; apply temperature‑derating‑factor Kt for ambient temperature above 40℃.
- Altitude ≤2000m no‑derating; closed‑box installation between 2000‑4500m: derate 2%‑5% rated‑current per 1000m elevation increase. Open‑air installation normally ignores altitude impact. Re‑check insulation clearance at high altitude in compliance with GB/T16935.1.
- Supports vertical, horizontal and inclined mounting; prevent gravity‑vibration negative influence over electrical contact performance.
- Forced‑air cooling improves heat dissipation and increases allowable operating current, refer to Kv correction coefficient.
- Do NOT replace fuse under live DC load unless equipped with certified load‑break switchgear.
- Replace fuse immediately if shell crack, deformation or mechanical damage appears.
- Additional reliability validation test required for extremely high‑vibration industrial environments.
- Select matched copper conductor cross‑section for terminals to control temperature‑rise performance.
- Ordering note: clarify terminal type BN(flat bolted) or UN(DIN hook‑fork) when placing purchase order; models marked asterisk * need factory pre‑confirmation before order placement, electrical performance is identical for two terminal versions.
Packing & Storage Requirements
Standard original‑box bulk package. Store in clean, dust‑free warehouse. Storage temperature:‑40℃~+120℃; humidity limit: RH≤70%@40℃, RH≤80%@30℃, RH≤90%@20℃. Sample testing support, OEM customization, stable mass‑volume supply for large‑capacity energy‑storage and new‑energy equipment manufacturers. REACH declaration available upon customer request.
FAQ
Q: What rating for GFEVT500‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 500VDC 500‑1800A?
A: Rated 500VDC, current range 500‑1800A, aR fast‑acting class, max breaking capacity 50kA@500VDC(time‑constant ≤5ms), minimum breaking current ≥5In, no fuse blow indicator.
Q: Difference between BN‑type and UN‑type terminals?
A: BN‑type is flat bolted horizontal connection; UN‑type is DIN hook‑fork customized terminal. Both versions share exactly same electrical parameters, only mechanical mounting differs, specify terminal model on purchase order.
Q: What body size for GFEVT500‑N‑74E?
A: Size 3# square‑body construction, without fuse blow indicator.
Q: What standards does GFEVT500‑N‑74E comply with?
A: Performance referenced to UL‑248‑1/UL‑248‑13, IEC60269‑1/IEC 60269‑4, RoHS compliant; REACH document available on request.
Q: Main application scenarios for GFEVT500‑N‑74E?
A: Large‑capacity energy‑storage cabinets, high‑capacity battery‑pack and DC relay backup short‑circuit protection.
