LY5-D20 surge protective deviceis suitable for TT/IT/TN-S/TN-C-S etc.Power supply system of AC 50/60Hz,≤380V,installed on the joint of LPZO or LPZOQ and LPZ2 zone,which protects the electric network not shocked by the thunder and lightning .it's designed according with GB18802.1\IEC616433-1, it adopts 3.5mm standard rail,there is a failure release mounted on the module of surge protective device.When the SPD fails in breakdown for over-heat and over-current,the failure release will help electric device separate from the power system and give the indication signal,green means normal,red means abnormal,it's also could be replaced for the module when has operating voltage.

Product Features
1.could be replaced for the module notneed power cut
2.Max current of endure the lighting stroke 40KA
3.time of response <25ns
4.the color of visible window shows operating status,green means normal,red means abnormal.

Application scope and installation position
It;s suitable for C grade lightning-proof,installed on the joint of LPZO or LPZ1 and LPZ2 zone,which protects the power supply system not shocked by the thunder and lightning,it usually installed in household distribution boards,computer equipment,telecom equipment,elevator equioment, frequency conversion equipment,operating room, custody room,eletronic equipment etc. and in the socket box in control equipment,Also applied for blew 6 flloor household and small villadom.

Main technical parameters:

Technical parameters	LY5-D20
Protection level grade	D
Rated operating voltage	220V/380V
Max continuous operating voltage	320V
Voltage protection level	≤1.2
Max discharge current	20
Nominal discharge current	10
Response  time	≤25
Operating environment	-40℃~+80℃
Max connection line	35mm2  copper line
Recommend connection line	16mm2/25mm2 copper line
Max fuse	32A
Installation	Standard rail 35mm
Material of outer covering	Burning-proof nylon