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SPD9-A (B) SPD

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Description

SPD9-A (B) series surge protective devices suitable for TT,IT,IT-S,TN-S,TN-C,TN-C-S etc. power supply system of AC 50/60Hz,≤230/400V,which protects the electric network not shocked by the thunder and releases 20kA over current. It’s designed according to IEC61643-1, GB18802.1, GB50057, and installed in the building of low-voltage main power distribution cabinet usually.

Features

1. Module design, convenient installation, electrified maintenance easy operation

2. Built-in over current and over heat, temperature control circuit breaking technology.

3. Quick response less than 25ns.

4. Alarm display, green (normal), red (malfunction).

Installation guide

SPD9-A and SPD9-B is used in the equal potential connection in case of surge current caused by lightning strike or similar, usually installed in the junction area of LPZ1, LPZ2 and LPZn, such as before the residential distribution box, computer center, the information, electronic, and control equipment or the nearest socket box.

Main Technical Parameters

Model Technical Parameters	SPD9-A				SPD9-B
Poles	1P,2P,1P+N,3P,3P+N,4P
Rated Operating Voltage Un(V)	230/400
Standard Discharge Current In(8/20μs) kA	5				10
Max Discharge Current Imax(8/20μs) kA	10				20
Max Continuous Working Voltage Uc(V)	275	320	385	420	275	320	385	420
U1mA Varistor Voltage (V)	430	510	620	680	430	510	620	680
Voltage Protection Level Up (kV)	<1.0	<1.2	<1.2	<1.2	<1.2	<1.5	<1.5	<1.5
Response Time	<25
Leakage Current75% Uc 1mA	<20μA
Protection degree	IP20
Limits of Temperature	-40℃~+80℃
Material of Outer Covering	PBT/PA66
Installation	Standard Rail 35mm
Color of Outer Covering	Yellow/Gray
Test Standard	GB18802.1 GB18802.21 IEC61643-1 IEC61643-21 UL1449ed.2

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