High Speed DC Fuse‑GFEVT1000‑N‑59E Square‑Body Fuse,100A‑800A 1000VDC,aR‑Class 50kA,BN‑Bolted & UN‑Din Terminal RoHS

The GFEVT1000-N-59E is a square-body high speed fuse designed for DC energy storage systems.GFEVT1000‑N‑59E Series High‑Speed Fuse is Size‑2# square‑body fast‑acting high speed dc fuse designed for heavy‑duty new‑energy DC short‑circuit backup protection. aR performance class, rated 100A‑800A 1000VDC, 50kA interrupting capacity with time constant ≤5 ms. Two terminal configurations available: BN‑Bolted terminal and UN‑Din fork terminal, both without fuse blow‑out indicator. Featuring low I²t, low power‑loss, excellent cycling performance and ≥20g anti‑vibration capability. RoHS compliant, REACH documentation available on request. Widely used for battery packs, BESS energy storage, DC relay and maintenance safety disconnector backup protection.

GFEVT1000-N-59E-100A-800A-1000V-fast-acting-fuse

Product At A Glance

Electrical Data @50kA 1000VDC

Key Features & Benefits

• aR‑class fast‑acting square‑body DC fuse, low I²t characteristic, excellent current‑limiting performance for semiconductor backup short‑circuit protection
• 50kA high interrupting capacity @1000VDC, time constant ≤5 ms, minimum breaking current ≥3.0In
• Two terminal choices: BN‑Bolted terminal and UN‑Din fork terminal, without blow‑out indicator for cost‑effective cabinet design
• Low watt‑loss, outstanding cycling performance, wide temperature adaptability, ≥20g mechanical shock & vibration resistance
• Supports parameter derating for high‑temperature, high‑altitude and forced‑air‑cooling working environments
• Complies with UL 248.1/248.13, IEC 60269‑1/60269‑4; RoHS compliant, REACH available for export‑oriented projects

Application Overview

GFEVT1000‑N‑59E square‑body high‑speed fuses serve as short‑circuit backup protection for heavy‑duty new‑energy DC equipment. Widely adopted in battery pack, energy‑storage cabinets, DC relay and maintenance safety disconnector circuits.

Critical Tip: Long‑term continuous operating current ≤75% of fuse rated‑current. Apply temperature‑altitude derating for closed cabinet installation. Always cut off power before fuse replacement.

Installation & Operating Notes

1. Select BN‑Bolted or UN‑Din fork terminal according to cabinet mounting hole layout.
2. Match copper conductor cross‑section following datasheet specification for stable contact performance.
3. Long‑term continuous working current cannot exceed 75% of nominal fuse rating.
4. Carry out current derating when ambient temperature＞40℃ or altitude＞2000m under enclosed cabinet condition.
5. Permitted for vertical, horizontal or inclined mounting; avoid gravity‑vibration impact on spring‑contact structures.
6. Discard and replace fuse immediately once mechanical damage occurs; avoid live‑load replacement unless equipment design explicitly permits.

Typical Applications

• New‑energy battery pack over‑current and short‑circuit backup protection
• BESS battery energy‑storage system DC feeder protection
• DC relay and power‑semiconductor device backup short‑circuit protection
• Maintenance safety disconnector auxiliary short‑circuit protection
• Heavy‑duty 1000VDC new‑energy converter‑inverter DC‑side protection

Pair GFEVT1000‑N‑59E fuse with our matching heavy‑duty semiconductor fuse holders for complete heavy‑current DC protection assembly.

Safety Reminders

• Disconnect all DC power before maintenance or fuse change. Strictly prohibit live‑line 1000VDC high‑voltage operation.
• Observe 75% rated‑current continuous‑working derating rule; extra derating required for high‑temperature / high‑altitude enclosed cabinet.
• Select fuse with breaking capacity higher than system prospective short‑circuit current.
• Refer to official datasheet for I‑t curve, derating curves and dimension drawings before bulk procurement.
• Mechanically damaged fuse must be replaced right away.

FAQ

Q: What is GFEVT1000‑N‑59E series high‑speed fuse?
A: GFEVT1000‑N‑59E is Size‑2# square‑body aR‑class fast‑acting DC fuse, rated 100A‑800A 1000VDC with 50kA interrupting capacity. It offers BN‑Bolted and UN‑Din fork terminals (no blow‑out indicator). Used for battery pack, energy‑storage and DC‑relay backup protection, RoHS compliant and REACH document available.

Q: What is the rule for continuous operating current?
A: Long‑term operating current must be ≤75% of fuse rated‑current. Additional derating shall be applied under high‑temperature and high‑altitude enclosed‑cabinet scenarios.

Q: What terminal versions are available?
A: BN‑Bolted terminal and UN‑Din fork terminal. Both variants have no fuse blow‑out indicator.

Q: What standards does this series comply with?
A: It meets UL 248.1, UL248.13, IEC 60269‑1, IEC 60269‑4. RoHS compliant; REACH declaration can be provided for overseas projects.

Q: Where is GFEVT1000‑N‑59E commonly used?
A: Applied for battery‑pack protection, BESS cabinets, DC‑relay backup protection, maintenance safety disconnector and heavy‑duty 1000VDC converter‑inverter DC‑side circuits.

Request Quotation & Technical Support

Please provide target part‑number (BN or UN), order quantity, system short‑circuit current, ambient temperature and altitude conditions. Our engineering team can supply datasheet, bulk quotation and component‑selection guidance for battery‑energy‑storage DC‑protection projects.

GFEVT1000‑N‑59E Series High‑Speed Fuse · EssFuse. Confirm datasheet I‑t, derating and dimension specs before mass production.