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China FN5-12 Series High Voltage Load Switch and Fuse Combination - Reliable Suppliers and Factory Solutions for 6-12kV Systems

The FN5-12 Series, manufactured by leading China suppliers, is a compact and lightweight indoor AC high voltage load switch-fuse combination apparatus, optimized for 6-12kV distribution systems. This innovative product, developed using advanced international technology, effectively breaks load currents, overload currents, and short-circuit currents. With three operational positions—make, break, and earth—it is perfectly suited for ring main units and prefabricated substations. Adhering to IEC420 and GB3804 standards, this apparatus offers an efficient space-saving installation while providing robust protection for transformers and power lines. Trust our factory for reliable and high-quality solutions in high voltage applications

Product Details

⚙️ Technical Specification

Rated Voltage KV	1min Frequency Voltage KV	Rated Current A	4S Thermal Current A	Dynamic Current (Peak) KA	Rated Breaking Current A	Short Circuit Close Current KA
12	42	400	12.5	31.5	400	31.5
12	48	630	20	50	630	50

Fuse Ratings

Model	Rated Voltage (KV)	Rated Current (A)	Fondant Rated Current (A)
SDLA*J	12	50	6.3, 10, 16, 20, 25, 31.5, 40
SFLA*J	12	100	50, 63, 71, 80, 100
SKLA*J	12	125	125

📐 Product Model

📏 Dimension

❓ Frequently Asked Questions

Q What is the rated voltage of this switchgear?

The rated voltage of this switchgear is 12 KV, suitable for medium-voltage distribution network applications.

Q What rated current options are available?

Two rated current options are available: 400 A and 630 A, to meet different load requirements in the distribution system.

Q What fuse models are compatible with this switchgear?

Three fuse models are compatible: SDLA*J (up to 50 A), SFLA*J (up to 100 A), and SKLA*J (125 A), all rated at 12 KV.

Q What is the short circuit close current capacity?

The short circuit close current capacity is 31.5 KA for the 400 A configuration and 50 KA for the 630 A configuration, ensuring reliable performance under fault conditions.

Q What is the 1-minute power frequency withstand voltage?

The 1-minute power frequency withstand voltage is 42 KV for the standard configuration and 48 KV for the enhanced configuration, complying with international medium-voltage insulation standards.

Q Can the dimension drawing be used for installation planning?

Yes, the dimension diagram provided above outlines the exact physical dimensions of the switchgear and can be used as a reference for installation layout, panel design, and space planning in substations or distribution rooms.