FKN12-24D Indoor Medium Voltage 24kV 630A Air Load Break Switch with Earthing Switch
The FKN12-24D is a manually operated medium-voltage switchgear component specifically designed for reliable power distribution and advanced system protection. It is widely applied in 12kV–24kV distribution networks and is perfectly suited for indoor switchgear, including Ring Main Units (RMUs) and KYN series metal-clad cabinets. With its integrated earthing switch, it ensures high operational safety and stable performance for industrial and utility power systems.
FKN12-24D Indoor Medium Voltage Air Load Break Switch (With Earthing)
Product Overview
The FKN12-24D is a manually operated medium-voltage switchgear component designed for reliable power distribution and advanced system protection. It is widely applied in 12kV–24kV distribution networks and is perfectly suited for indoor switchgear such as Ring Main Units (RMUs) and KYN series metal-clad cabinets.
Key Features
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Manual Operation: Designed as a manual operation type, equipped with a dedicated operating handle.
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Integrated Earthing: Comes standard with a grounding switch to ensure high operational safety during maintenance.
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Optimized Design: Features a compact structure with a 300mm phase distance and the mechanism conveniently installed on the right-hand side.
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Durability: Engineered for reliable arc extinguishing and a long service life with easy maintenance requirements.
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Customization: While standard without a fuse holder, optional integration is available upon request.
Technical Specifications
| Item | Unit | Data |
| Rated Voltage | kV | 24 |
| Rated Power Frequency | Hz | 50 |
| Rated Current | A | 630 |
| Maximum Rated Current (Fuse) | A | 80 |
| Rated Short-time Withstand Current (2s) | kA | 20 |
| Rated Short Circuit Making Current | kA | 50 |
| Rated Peak Withstand Current | kA | 50 |
| Rated Breaking Transfer Current | A | 1050 |
| Mechanical Life | Times | 2000 |
Operating Conditions
The FKN12-24D is designed to operate reliably under the following environmental conditions:
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Ambient Temperature: Maximum +40°C; Minimum -25°C.
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Altitude: ≤2000m.
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Relative Humidity: Daily average 95%; Monthly average 90%.
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Atmosphere: Must be free from corrosive or flammable gases, water vapor, or significant pollution.
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Vibration: Suitable for environments without frequent severe vibration or shock.
Selection details for FKN12-24D Indoor Medium Voltage 24kV 630A Air Load Break Switch with Earthing Switch
To confirm the required load break switch configuration for your project, include:
- Rated voltage/current, switching duty and switch/fuse configuration
- Earthing switch, interlocking and manual/motor operating requirements
- Mounting dimensions, shaft interface, cabinet layout and control voltage
Drawings and quotation requirements
Send the model reference, application, quantity and destination country together with the relevant drawing or existing equipment information. Confirm the selected configuration against a model-specific drawing and ratings sheet before ordering; request the applicable test documentation for your project requirements.
Request model confirmation and a technical quotation · Compare related Load Break Switch / 24kV Indoor Load Break Switch.
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