FKRN12-12D Indoor 12kV 3-Phase High Voltage AC Pneumatic Load Break Switch with Fuse Combination
The FKRN12-12D series is a high-performance pneumatic type load break switch and fuse combination apparatus designed for 12kV three-phase power distribution systems. It is engineered to safely divide load current, overload current, and broken wire short-circuit current. This versatile switch serves as an ideal protection and control solution for transformers, cables, and overhead lines, making it a perfect fit for city networks, terminal substations, and ring main units (RMU).
FKRN12-12D Indoor High Voltage Pneumatic Load Break Switch and Fuse Combination
Product Overview
The FKRN12-12D series is a high-performance indoor pneumatic-type load break switch and fuse combination apparatus designed for 12kV three-phase power distribution systems. It is engineered to safely divide load current, overload current, and broken wire short-circuit currents. This versatile switch serves as an ideal protection and control solution for transformers, cables, and overhead lines, making it a perfect fit for city networks, terminal substations, and ring main units (RMU).
Key Features & Advantages
-
Integrated Design: The load switch, earth switch, fuse, and operating mechanism are integrated onto a single frame for a compact structure and easy installation.
-
Superior Safety: Features a reliable mechanical locking device between the load switch, grounding switch, and fuse, strictly meeting “five-proof” safety requirements.
-
Automatic Protection: When a fuse breaks down, the load-breaking switch automatically opens via an interlock mechanism to prevent single-phase operation.
-
Flexible Operation: Supports both manual and electric operation (AC/DC), facilitating the “three remotes” requirements of modern power systems.
-
Standard Compliance: Designed and manufactured in accordance with GB3804, GB16926, and IEC international standards.
Technical Specifications
| Parameter | Unit | FKRN12-12D Data |
| Rated Voltage | kV | 12 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 125 |
| Rated Peak Withstand Current | kA | 50 |
| Rated Short-circuit Making Current | kA | 80 |
| Rated Short-circuit Breaking Current | kA | 31.5 |
| Mechanical Life | Times | 10,000 |
| Switch-on Speed | m/s | >3.8 |
Usage Environment
-
Ambient Temperature: Max +40°C, Min -15°C.
-
Altitude: Maximum installation altitude ≤ 1000m.
-
Relative Humidity: Daily average ≤ 95%, Monthly average ≤ 90%.
-
Air Quality: No significant pollution from corrosive or flammable gases.
SEO & Media Settings (For WordPress)
-
Product URL Path:
products/fkrn12-12d-12kv-pneumatic-load-break-switch -
Meta Description: High-quality FKRN12-12D 12kV indoor pneumatic load break switch and fuse combination for transformer protection. Compact design, reliable safety, and IEC compliant.
-
Primary Image Filename:
fkrn12-12d-pneumatic-load-break-switch-combination.jpg -
Alt Text: FKRN12-12D indoor 12kV high voltage pneumatic load break switch with fuse combination apparatus.
Send Us Your Inquiry
We are always ready to assist you! Contact our team for expert support and personalized solutions.