


1 Features
 RoHS compliant
 Stable performance in its service life
 Follow current cut-off
 Stable performance in its service life
2   Applications  
The single-phase,three-phase AC power supply surge protection
 Protection of surge voltage in the DC power supply system
3 Typical parameters @ T=25℃ RH = 45%-75%
Model  | LK-SPD25KA/320B+C  | |
Nominal operating voltage Un  | 220  | V  | 
Max continuous operating voltage Uc(AC50~60Hz)  | 320  | V  | 
DC Breakdown Voltage (100V/s)  | ≥500  | V  | 
Voltage Protection Level Up(6kV@1.2/50µS、25kA@8/20µS)  | ≤2.3  | kV  | 
Follow current cut-off ability If (AC50~60Hz)  | 500  | Arms  | 
ClassⅠ(符合IEC61643-11)  | ||
Nominal impulse discharge current 8/20 µS  | 25  | kA  | 
Nominal impulse discharge current 10/350 µS  | 25  | kA  | 
ClassⅡ(符合IEC61643-11)  | ||
Nominal impulse discharge current In8/20 µS  | 50  | kA  | 
Max impulse discharge current Imax 8/20 µS  | 100  | kA  | 
Applications  | L-L、L-N、L-PE、N-PE  | |
Mounting  | 35mm DIN-rail  | |
IP level  | IP20  | |
Remote  | NC常闭,COM公共点,NO常开  | |
Operation and storage temperature  | -40~+85  | °C  | 
Weight  | ~200  | g  | 
Climatic category (IEC 60068-1)  | 40/90/21  | |
Component size and construction:mm

