China T2 20/40 factory and manufacturers

T2 20/40

It is mainly used to provide T2 protection for various electronic and

electrical equipment in buildings vulnerable to lightning overvoltage.

Mainly used as primary protection equipment in the main distribution

system.

Technical Data

Model number		20	40
Max Continuous Operating Voltage	Uc(V~)	275/320/385/440	275/320/385/440
Nominal discharge current	In(kA)	10	20
Maximum dischargecurrent	lmax(kA)	20	40
Protection level	Up(kV)	<1.3/1.4/1.6/1.8	<1.4/1.5/1.8/2.2
Response time	(ns)	<25	<25

General parameter

Access wire area	(mm²)	≥10	≥10
Access ground crosS-sectional area	(mm²)	≥16	≥16
SPD special disconnector	Recommend	SSD40	SSD40
Working environment		-40~+70°C,relative humidity<95%(below 25℃)
Remote communication connection		1411:NO,1112:NC

Mechnical characteristics

Connection Byscrew terminals	6-25mm²
Terminal Screw Torque	2.5Nm
Recommended Cable cross Section	≥16mm²
Insert wire length	15mm
Mounting DIN rail	35mm(EN60715)
Degree of Protection	IP20
Housing	PBT/PA
Flame retardant grade	UL94 VO
Operating temperature	-40℃~+70℃
Operating relative humidity	5%-95%
Working atmospheric pressure	70kPa～106kPa