FN7 Load breaker switch, China FN7 Load breaker switch Manufacturers, Suppliers, Factory - Zhejiang Shangdian Complete Electric Co., Ltd.

Product Description

FN7 indoor high voltage load switch (fuse combination electrical)

FN7 type indoor AC high-voltage load switch is suitable for the three-phase AC power system with AC 50Hz and rated voltage 12KV as the load current and short circuit current. Any current that the combined electric appliance can break until the short circuit current can be used as protection.

Working condition

· Normal operating conditions: upper limit of ambient air temperature +40℃, lower limit -25℃;

· Altitude: the altitude is 1000m and below;

· Relative humidity: daily average is not more than 95%, monthly average is not more than 90%;

· The surrounding air should be free from obvious pollution such as corrosive or flammable gases and water vapor;

· No frequent violent vibration,

Main technical parameters

Item		Unit		Value
Rated voltage		Un	kV	12		24		36		40.5
Rated current		In	A	630	1250	630	1250	630	800	630	800
Max. rated current		1	A	630	1150	630	1150	630	800	630	800
Short circuit making capacity		Ima	kA peak	63	63	63	63	63	63	63	63
Peak withstand current		ldyn	kA peak	63	63	63	63	63	63	63	63
Short time current	1 sec.	Ith	kA eff	25	25	25	25	25	25	25	25
	2 sec.	Ith	kA eff	20	20	20	20	20	20	20	20
	3 sec.	Ith	kA eff	18	18	16	16	16	16	16	16
capacity(test duty 1 and 2,IEC 265)		1	A	630	1250	630	1250	630	800	630	800
Mainly capacitive breaking		-	A	150	150	80	80	50	50	50	50
Max,breaking capacity in co-operation			A	1600		900		300		300
Max.fuse size		In	A	125		80		40		40
Power frequency withstand voltage 50Hz 1min
- to earth and between poles			kV	42		55		80		95
- across isolating distance			kV	48		70		88		120
Impulse withstand voltage 1, 2/50 us.
- to earth and between poles			kV	75		125		170		190
- across isolating distance			kV	85		145		195		220
Pole distance		P	mm	150,175,210		235,275		360		360