FK(R)N12-24D High Voltage Load Breaker Switch

The FK(R)N12-24D series is an indoor high-voltage switching device for 24kV, 50Hz AC systems. This pressurized-air load switch and combined apparatus offers high technical performance and reliable operation. It uses a spring-operated mechanism, available in both manual and motorized versions. Based on the gas compression arc extinction principle, it allows multiple breaking operations without replacement. It can make, carry, and break load currents under normal conditions, and withstand short-circuit currents. An optional earthing switch with equivalent making and withstand capacity can be fitted, which is mechanically interlocked to prevent misoperation.

product details

Type & Meaning

1	Load Switch
2	Air
3	Fuse Protection Function
4	Indoor
5	Design Number
6	Rated Voltage
7	Earthing Switch
8	Rated Current

Operating Conditions

Altitude: Not exceeding 1000 meters
Ambient Temperature: Maximum: +40℃, Minimum: -10℃
Relative Humidity: Daily average not exceeding 95%, Monthly average not exceeding 90%
Seismic Intensity: Below intensity 8

Product Features

1. Professional Structural Design: Reasonable structure with electric operation form, ensuring easy and efficient operation.
2. Insulating and Flame-Retardant Material: High-grade insulating and flame-retardant material effectively extends service life and improves safety.
3. Stable and Efficient Output: Stable and reliable output greatly improves work efficiency and ensures continuous operation.
4. Wide Application Range: Suitable for various working conditions and installation scenarios with strong compatibility.
5. Reliable and Stable Performance: Stable core components with low failure rate, reducing maintenance costs and safety risks.
6. Direct Factory Supply: Factory direct sales with strict quality control, eliminating middlemen and ensuring fast after-sales response.

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Technical Parameters

NO.	Name	Unit	Value
1	Rated Voltage	kV	24
2	Rated Frequency	Hz	50
3	Rated Current	A	630
4	Fuse Maximum Rated Current	A	80
5	Rated Active Load Breaking Current, Rated Closed-loop Breaking Current	A	630
6	Rated Short-time Withstand Current [2S]	kA	20
7	Rated Short-circuit Making Current, Rated Peak Withstand Current	kA	50
8	1-minute Power-frequency Withstand Voltage, Phase-to-phase and Phase-to-earth / Across the isolating distance	kA	65/79
9	Lightning Impulse Withstand Voltage (Peak), Phase-to-phase and Phase-to-earth / Across the isolating distance	kA	125/145
10	Rated Cable-charging Breaking Current	A	16
11	Mechanical Endurance	time	2000
12	Rated Transfer Current	A	1050
13	Fuse Rated Short-circuit Breaking Current	kA	31.5