FZN16-12 Indoor load break switch (LBS) 12KV

FZN16 is a kind of indoor high voltage vacuum load switch, suitable for three-phase AC 50Hz power grid with rated voltage 6-12KV, mainly used to break load current, overload current and short circuit current. ‌ This kind of switch is especially suitable for oil-free, no maintenance and frequent operation requirements ‌.

The FZN16 load switch can be used with CS6-I operating mechanism and CS□ manual operating mechanism to meet different operation requirements. It is designed with frequent operation in mind and therefore performs well in situations where high frequency operations are required ‌. In addition, the FZN16 load switch also has the characteristics of no maintenance, reducing the need for maintenance work, improve the reliability of the equipment ‌.

Product Detail

Environment condition

The altitude: under 1000M.
The ambient temperature: -25℃-+40℃.
The relative humidity of air: monthly≤90%, daily≤95%.
Amplitude: Earthquake degree 8.
Application occasions should free from fire, inflammables, explosives, corrosives and severe vibration.

Technical parameter

No	Item		Unit	Value
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated current		A	630	125
4	Rated insulation level	1min power frequency withstand voltage	kV	Arc-quenching chamber fracture 30
		Effective value		Earth , phase 42, insulating fracture 48
		Lightning impulse withstand voltage (peak)		Earth , phase 75, insulating fracture 85
5	Rated dynamic current (peak)		kA	50
6	4S thermal current		kA	20
7	Rated power load breaking current		A	630
8	Rated closed-loop breaking current		A	630
9	Rated cable charge breaking current		A	10
10	Rated breaking no-load transformer capacity		kV	1250
11	Rated breaking AC current		A	3150
12	Rated short-circuit closed current		kA	50
13	Rated current breaking times		times	2000
14	Mechanical life		times	10000
15	Permitted wear-thickness of vacuum arc-quenching chamber contact		mm	2
16	Manual operating torque		Nm	>200