GFHVT1500‑74ES Series Square‑Body Fast‑Acting aR DC Fuse 1500VDC 100‑800A
GFEVT1000‑N‑74E square‑body fast‑acting aR DC fuse,1000VDC 315‑1400A,50kA breaking capacity. Two terminal styles: BN‑flat bolted / UN‑DIN hook‑fork, no blow indicator, Size 3#.
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Dimensions (mm)
Bolted xxxBN-74E Dimensions
Din xxxUN-74E Dimensions
GFEVT1000‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 1000VDC 315‑1400A
GFEVT1000‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 1000VDC 315‑1400A is Size 3# square‑body bolt‑mount aR‑class high‑speed DC fuse, engineered for heavy‑duty new‑energy DC‑system applications. Rated voltage 1000VDC, max breaking capacity 50kA@1000VDC (Time Constant ≤5ms), minimum breaking current ≥5In. Two mechanical terminal configurations without blow indicator: BN‑type flat bolted horizontal connection; UN‑type DIN hook‑fork vertical connection. It features excellent cycling performance, low power loss, strong anti‑arc capability and wide ambient‑temperature adaptability, mechanical shock‑vibration resistance ≥20g. Performance references UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS compliant; REACH document is available upon request. It provides dependable short‑circuit protection for large‑scale energy‑storage cabinets, lithium‑ion battery‑packs and DC relay backup units.
GFEVT1000-N-74E-315A-1400A-1000V-fast-acting-fuse
Key Features
- Model Series: GFEVT1000‑N‑74E Square‑Body Fast‑Acting aR DC Fuse
- Rated Voltage: 1000 VDC
- Current Range: 315A‑1400A; Operation Class: aR (semiconductor short‑circuit protection)
- Max Breaking Capacity: 50kA @1000VDC (Time Constant ≤5ms)
- Minimum Breaking Current: ≥5 In
- Two terminal styles without blow indicator: BN‑flat bolted horizontal; UN‑DIN hook‑fork vertical
- Outstanding cycling capability & low watt‑loss characteristic
- Ultra‑fast fault‑current interruption, strong anti‑voltaic impingement
- Size 3# square‑body package, optimized for compact cabinet layout
- High shock‑vibration resistance ≥20g, suitable for industrial & new‑energy cabinet environment
- Compliance: Referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS; REACH on request
General Technical Specifications
| Product Series | GFEVT1000‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse |
| Rated Voltage | 1000 V DC |
| Rated Current Range | 315A‑1400A (aR operation class) |
| Max Breaking Capacity | 50kA @1000VDC (Time Constant ≤5ms) |
| Minimum Breaking Current | ≥5 In |
| Terminal Versions | BN‑flat bolted / UN‑DIN hook‑fork, no blow indicator |
| Body Size | Size 3# square‑body |
| Shock & Vibration Resistance | ≥20g |
| Standards Compliance | Referenced to UL‑248‑1/UL‑248‑13, IEC 60269‑1/IEC 60269‑4, RoHS |
| Operating Temperature | ‑5℃ ~ +40℃(nominal);‑40℃~+85℃(allowable) |
| Storage Temperature | ‑40℃ ~ +120℃ |
Part Number List & Electrical Parameters(Test@1000VDC,50kA,Time‑Constant≤5ms)
| Part Number | Rated Current | Terminal Type | Pre‑Arcing I²t (A²s) | Clearing I²t (A²s) | Power Loss(W) @1.0In | Body Size | Cert Remark |
| GFEVT1000‑315BN‑74E | 315A | BN‑bolted | 8550 | 48500 | 120 | 3# | RoHS&REACH |
| GFEVT1000‑350BN‑74E | 350A | BN‑bolted | 12150 | 68640 | 125 | 3# | RoHS&REACH |
| GFEVT1000‑400BN‑74E | 400A | BN‑bolted | 17550 | 99150 | 133 | 3# | RoHS&REACH |
| GFEVT1000‑450BN‑74E | 450A | BN‑bolted | 27900 | 157600 | 145 | 3# | RoHS&REACH |
| GFEVT1000‑500BN‑74E | 500A | BN‑bolted | 35100 | 198315 | 155 | 3# | RoHS&REACH |
| GFEVT1000‑550BN‑74E | 550A | BN‑bolted | 49500 | 279675 | 163 | 3# | RoHS&REACH |
| GFEVT1000‑630BN‑74E | 630A | BN‑bolted | 75150 | 424600 | 172 | 3# | RoHS&REACH |
| GFEVT1000‑700BN‑74E | 700A | BN‑bolted | 103500 | 625700 | 185 | 3# | RoHS&REACH |
| GFEVT1000‑800BN‑74E | 800A | BN‑bolted | 185500 | 1001700 | 195 | 3# | RoHS&REACH |
| GFEVT1000‑900BN‑74E | 900A | BN‑bolted | 274500 | 1454850 | 203 | 3# | Pending |
| GFEVT1000‑1000BN‑74E | 1000A | BN‑bolted | 405000 | 2126500 | 210 | 3# | Pending |
| GFEVT1000‑1100BN‑74E | 1100A | BN‑bolted | 517500 | 2696500 | 225 | 3# | Pending |
| *GFEVT1000‑1250BN‑74E | 1250A | BN‑bolted | 729000 | 3717900 | 240 | 3# | Pending |
| *GFEVT1000‑1400BN‑74E | 1400A | BN‑bolted | 1125000 | 5512500 | 265 | 3# | Pending |
| GFEVT1000‑315UN‑74E | 315A | UN‑hook‑fork | 8550 | 48500 | 120 | 3# | RoHS&REACH |
| GFEVT1000‑350UN‑74E | 350A | UN‑hook‑fork | 12150 | 68640 | 125 | 3# | RoHS&REACH |
| GFEVT1000‑400UN‑74E | 400A | UN‑hook‑fork | 17550 | 99150 | 133 | 3# | RoHS&REACH |
| GFEVT1000‑450UN‑74E | 450A | UN‑hook‑fork | 27900 | 157600 | 145 | 3# | RoHS&REACH |
| GFEVT1000‑500UN‑74E | 500A | UN‑hook‑fork | 35100 | 198315 | 155 | 3# | RoHS&REACH |
| GFEVT1000‑550UN‑74E | 550A | UN‑hook‑fork | 49500 | 279675 | 163 | 3# | RoHS&REACH |
| GFEVT1000‑630UN‑74E | 630A | UN‑hook‑fork | 75150 | 424600 | 172 | 3# | RoHS&REACH |
| GFEVT1000‑700UN‑74E | 700A | UN‑hook‑fork | 103500 | 625700 | 185 | 3# | RoHS&REACH |
| GFEVT1000‑800UN‑74E | 800A | UN‑hook‑fork | 185500 | 1001700 | 195 | 3# | RoHS&REACH |
| GFEVT1000‑900UN‑74E | 900A | UN‑hook‑fork | 274500 | 1454850 | 203 | 3# | Pending |
| GFEVT1000‑1000UN‑74E | 1000A | UN‑hook‑fork | 405000 | 2126500 | 210 | 3# | Pending |
| GFEVT1000‑1100UN‑74E | 1100A | UN‑hook‑fork | 517500 | 2696500 | 225 | 3# | Pending |
| *GFEVT1000‑1250UN‑74E | 1250A | UN‑hook‑fork | 729000 | 3717900 | 240 | 3# | Pending |
| *GFEVT1000‑1400UN‑74E | 1400A | UN‑hook‑fork | 1125000 | 5512500 | 265 | 3# | Pending |
Application Scenarios
GFEVT1000‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 1000VDC 315‑1400A is designed for high‑voltage DC new‑energy projects. Two terminal styles without blow indicator: BN‑flat bolted / UN‑DIN hook‑fork. Suitable for large‑capacity energy‑storage power‑station cabinets, lithium‑ion battery‑pack protection and DC relay backup short‑circuit protection. aR‑class fast‑acting performance delivers reliable fault‑current protection for power semiconductors and high‑power DC‑side power components.
Installation & Operating Notes
- Size 3# square‑body construction; choose BN‑flat bolted or UN‑DIN hook‑fork terminal version according to cabinet layout. Apply proper bolt torque to prevent bad contact and over‑heating risk.
- Recommended continuous working current ≤75% of fuse rated‑current. Apply temperature‑derating factor Kt when ambient temperature exceeds +40℃.
- Altitude ≤2000m: no‑derating; closed‑box installation 2000‑4500m: derate 2%‑5% per 1000m elevation. Re‑check insulation clearance per GB/T16935.1 for high‑altitude deployment.
- Permits vertical, horizontal, inclined mounting. Avoid gravity‑vibration negative influence over electrical contact performance.
- Forced‑air cooling improves heat dissipation and allowable operating current, refer to Kv correction coefficient.
- Never replace fuse under live DC load unless equipped with certified load‑break switchgear.
- Replace fuse immediately if shell crack, deformation or mechanical damage appears. This series has NO blow indicator for fuse burnout status.
- 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 reminder: specify terminal suffix BN or UN when placing order; models marked asterisk * need factory pre‑confirmation before order placement; Pending items require pre‑factory verification for RoHS & REACH status.
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 energy‑storage and new‑energy equipment manufacturers. REACH declaration available upon customer request.
FAQ
Q: What rating for GFEVT1000‑N‑74E Series Square‑Body Fast‑Acting aR DC Fuse 1000VDC 315‑1400A?
A: Rated 1000VDC, current range 315‑1400A, aR fast‑acting class, max breaking capacity 50kA@1000VDC(Time Constant ≤5ms), minimum breaking current ≥5In, Size3# square‑body, no blow indicator.
Q: Difference between BN‑type and UN‑type terminals?
A: BN‑type: flat bolted horizontal connection; UN‑type: DIN hook‑fork vertical terminal. No blow indicator for both, electrical parameters are fully identical; please specify suffix BN / UN on purchase order.
Q: Does GFEVT1000‑N‑74E have fuse blow indicator?
A: No, N‑series version has no blow indicator function.
Q: What body size for GFEVT1000‑N‑74E?
A: Size 3# square‑body construction, available in BN / UN two terminal structures.
Q: What standards does GFEVT1000‑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; Pending models need factory confirmation.
Q: Main application scenarios for GFEVT1000‑N‑74E?
A: Large‑capacity energy‑storage cabinets, lithium‑ion battery‑pack and DC relay backup short‑circuit protection.
