RT331-1-QNZ
1140V AC general-purpose fuse designed for reliable protection of cables, lines, and electrical equipment in wind power systems and industrial power distribution applications.
| Manufacturer | Sinofuse |
|---|---|
| Rated Voltage | AC 1140V |
| Current Range | 50A – 250A |
| Utilization Category | gG |
| Breaking Capacity | 200kA |
| Standards | IEC 60269 |
Certificates

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10+ Years Experience
Expert in fuse solutions
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One-Stop Service
From selection to after-sales support
Key Features
- Full-range protection (gG) for overload and short-circuit conditions
- High breaking capacity up to 200kA for safe fault interruption
- Designed for high-voltage AC systems up to 1140V
- Suitable for protection of cables, feeders, and electrical equipment
- Reliable performance in industrial and wind power environments
Engineering Support
Fuse Selection Support
Verify the right fuse rating based on your system conditions.
Technical Consultation
Get professional support from our engineering team.
Cross-System Matching
Ensure coordination with contactors and other protection devices.
Custom Solutions
We support customized solutions for special applications.
Where This Fuse Is Used
Used in wind turbine and industrial power distribution systems, this fuse provides reliable full-range protection for electrical circuits under overload and short-circuit conditions.
- Protection of wind turbine auxiliary power systems
- Cable and feeder protection in electrical distribution circuits
- Generator-side and transformer-side protection
- General AC circuit protection in industrial and renewable energy systems
How to Select the Right Fuse
Follow these 4 steps to ensure proper fuse selection for your energy storage system.
1
Identify Installation Point

Determine where the fuse will be installed within the system.
2
Define System Parameters

Confirm system voltage and determine the continuous operating current.
3
Check Fault Conditions

Ensure the fuse breaking capacity exceeds the prospective fault current.
4
Select Fuse Type

Choose the appropriate fuse type based on application and protection requirements.
Need Help with Fuse Selection?
Our engineering team can help you find the most suitable fuse for your application. Contact us with your system parameters.




