FN7-12DXLRAF Indoor High Voltage Load Break Switch with Fuse and Motorized Device
The FN7-12DXLRAF is a 12kV indoor AC high-voltage gas-producing load break switch designed for reliable power distribution. This advanced combination unit features a motorized switching device for automated operation and an integrated impact fuse for superior short-circuit protection. Its unique side-operating mechanism ensures easy installation and maintenance, making it a versatile solution for diverse industrial and utility applications.
FN7-12DXLRAF Indoor High Voltage Load Break Switch (LBS)
Product Overview
The FN7-12DXLRAF is a high-performance, gas-producing indoor high-voltage load break switch designed for AC 50Hz and 12kV three-phase power systems. This combination unit is engineered for the reliable opening and closing of load currents and short-circuit currents.
Built upon the proven FN7-12 series, the DXLRAF model integrates a side-operating mechanism that significantly simplifies installation and maintenance, making it a flexible choice for various switchgear configurations. It comes equipped with an impact fuse and a motorized switching device for enhanced protection and automated control.
Technical Specifications
| Item | Unit | Data |
| Rated Voltage | kV | 12 |
| Rated Current | A | 400 / 630 |
| 1min Power Frequency Withstand Voltage | kV | 42 / 48 |
| 4S Thermal Stable Rated Current (Effective) | kA | 12.5 / 20 |
| Dynamic Stable Current (Peak) | kA | 31.5 / 50 |
| Short Circuit Making Current | kA | 31.5 / 50 |
| Rated Breaking Current | A | 400 / 630 |
| Rated Transfer Current | A | 1000 |
Environmental Operating Conditions
To ensure optimal performance and longevity, the FN7-12DXLRAF should be operated under the following conditions:
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Ambient Temperature: Upper limit of +40°C, lower limit of -25°C.
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Altitude: Does not exceed 1000m.
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Relative Humidity: Daily average $\leq 95\%$; monthly average $\leq 90\%$.
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Earthquake Intensity: Does not exceed 8 degrees.
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Pollution Level: Level II.
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Atmospheric Safety: Suitable for places without risk of fire, explosion, chemical corrosion, or severe vibration. The air should be free from significant pollution by corrosive or flammable gases and water vapor.
Key Features & Benefits
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Enhanced Safety: Integrated impact fuse provides reliable short-circuit protection.
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Smart Operation: Equipped with a motorized switching device for remote or automated operation.
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Easy Installation: The side-operation mechanism allows for more flexible and convenient setup in compact spaces.
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Proven Design: Utilizes gas-producing arc extinguishing technology for efficient current breaking.
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