1.Breaking off through power frequency current and lighthing current, effectively protects SPD from fusing short-circuit due to abnormal transient overvoltage, prevents from serious fire accidents. 2.Achieved selective breaking off for throughed frequency current and lightning current.effectively protects SPD from deteroration resuling in start voltage falling to less than the power supply voltage and increasing of leakage current, prevents from serious fire accidents.            3.When SPD has a lightning current,the extermnal disconnector wil not be tripped by mistake, so that lighting protection of electrical equipment is always in valid state.SCB-SPD specal backup protector provides professional backup protection for SPD(Surge Protection Device) which provides protection for the frst level, second level and third-level equipment it is suitable for places where SPD lightning protection equipment has been installed,such as power equipment in industial and residential buildings, electrical, communications, road and transportation, petrochemical and other industries.

Spec.& Model	LYSCB-20	LYSCB-40	LYSCB-60	LYSCB-80	LYSCB-100	LYSCB-15G
Non-trip impulse current le	20kA(8/20)	40kA(8/20)	60kA(8/20)	80kA(8/20)	100kA(8/20)	15kA(8/350)
Non-trip impulse current withstand capacity	10kA(8/20)16 times 20kA(8/20)2 times	20kA(8/20)16 times 40kA(8/20)2 times	40kA(8/20)16 times 60kA(8/20)2 times	60kA(8/20)16 times 80kA(8/20)2 times	80kA(8/20)16 times 100kA(8/20)2 times	Meet the standard GB18802.1-2011 test level T1
Electrical symbo
Rated operating voltage Ue	230VAC
Rated insulation voltage Ui	400VAC
Current tripping value lo	3±1A
Running short-circuit capacity lcs(cosφ0.20~0.25)	6kA/20kA	6kA/20kA	6kA/20kA	6kA/35kA	50kA/100kA	50kA/100kA
Power frequency short-circuit current breaking time Tcs	≤40ms
Power frequency load current breaking time To	≤50ms
Mechanical life	≤4000times
Electrical life	≤4000times
Shell IP code	IP20
Screw	M5
Min. area of connecting cable	2.5mm2 /flexible
Max. area of connecting cable	25mm2/flexible
Max. allowable operating current of remote-signaling contact	2A/250VAC NO or NC (default NC)
Shell material	PBT UL94VO
Outline dim	91×73×17.8mm
Protection action and ambient temperature	-25℃ ~-60℃ inside switch
Storage condition	Temperature -40℃ ~-75℃ , relative humidity: <95%(at 25℃ )
Service condition	Temperature -25℃ ~-60℃ , relative humidity: <95%(at 25℃ )
Shell color	Shell: blue    Handle: orange
Mounting rail	EN60715(35mm)

Model	Protection level	Iimp/In	Width(W)	Electrical symbol
LYSCB-15G	T1	≤25kA(10/350μs)	35mm		SSD
		≤15kA(10/350μs)	18mm
LYSCB-100	T2	≤60kA(8/20μs)	18mm
LYSCB-80
LYSCB-60
LYSCB-40	T2/T3	≤20kA(8/20μs)	18mm
LYSCB-20