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How to install surge protection device 320V 2P Type 2| LKX-C40
Type 2 Surge Protection

How to install surge protection device 320V 2P Type 2| LKX-C40

The Type 2 SPD Surge Protective Device 20–40kA 320V AC (LKX-C40) provides dependable Class II surge protection for AC power distribution networks, effectively reducing transient overvoltage caused by switching operations and indirect lightning. Featuring high-capacity MOV elements, quick response, and stable leakage performance, it ensures long-term protection for residential and commercial distribution boards, industrial automation equipment, HVAC systems, and general 320V AC circuits.

    01

    Product principle and working conditions

    1.Meets Class ll (8/20 μs ) SPD tests.​
    2. Based on Zinc Oxide Technology
    3. Using 34S MOV, the maximum is up to 8/20μs 40kA.
    4. No power frequency, continuous flow
    5. Compact, yet high surge rated pluggable design, with a minimum 35mm DIN rail width.
    6. The operational temperature range is -40℃ to +80℃.
    7.For remote monitoring, red/green status indication and changeover contacts are standard.(Remote function is optional).

    02

    Technical parameter details

    Technical Data
    POLE 2P/2+0
    Technology MOV(Metal Oxide Varistors) GDT
    Protection mode(s) L-PE/N-PE NPE
    Nominal voltage (A.C.)    [Un] 220V 300V 380V 400V 225V
    Max.continuous operating voltage (D.C.)    [Ucpv] 275V 320V 385V 420V 225V
    Nominal discharge current(8/20μs)    [In] 20kA 20kA
    Max.discharge current (8/20μs)    [lmax] 40kA 40kA
    Protection level    [Up] ≤1.5kV ≤1.6kV ≤1.8kV ≤2.0kV ≤1.5kV
    Responsee time    [tA] ≤25ns  
    Temporary overvoltage(TOV) withstand - 5 sec  [Ut] 335V 440V 440V 620V 335V
    Admissible short-circuit current    [lsccr] 25kA
    Max, backup fuse 63AgL/Gg

    03

    Mechanical Data

    Mechanical Data
    Current AC system
    SPD configuration Single/Three phase
    Pluggable Available
    Mounting 35mm DlN rail
    Housing material Thermoplastic,UL 94 V-O
    Operating temperature -40℃...+80℃
    Protection rating IP20
    Remote Signaling Green/Red
    Wiring for remote signaling Optional
    Max.Voltage/Current for remote signaling Max 1.5mm solid/flexible
    Standards compliance 250V/0.1A;125V/0.2A;75V/0.5A
    Certification CE, CB, RoHS,TUV
    04

    Outer appearance and installation dimensions

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    05

    Installation considerations

    1.Be sure to turn off the power before beginning the installation. Operating when energized is strictly banned.
    2.A fuse or circuit breaker should be installed in series at the front of the surge protection module.
    3.Connect according to the installation diagram throughout the installation process. Avoid making improper connections. After installation, close the circuit breaker (or fuse) switch and ensure that the operation is OK.
    4.After installation, insert the module and check that the surge protection module is working properly.
    5.During operation, inspect the surge protection module on a regular basis and monitor the state of the fault display window. If the fault display window turns red or the remote signaling terminal emits an alarm signal, it indicates that the surge protection module is malfunctioning and should be repaired or replaced immediately.
    6.Install power surge protection units in parallel. The connection wires must be sturdy, dependable, short, thick, and straight.

    As a company that focuses on technological innovation and product quality, we are committed to providing our customers with safe, reliable and superior performance products. We firmly believe that this product will bring you convenience and enjoyment, and we will make unremitting efforts and continuous innovation to meet your needs. Please do not hesitate to contact us immediately and we look forward to providing you with more help and support.