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Surge protection device for home electrical panel 275V 4P T1+T2 | LKX-T1T2
Type 1+2 Surge Protection

Surge protection device for home electrical panel 275V 4P T1+T2 | LKX-T1T2

The Type 1+2 SPD Surge Protective Device 20–40kA 275V AC 4-Pole (LKX-T1T2) provides high-energy lightning surge protection and transient overvoltage suppression for low-voltage power distribution systems, ensuring reliable protection for residential, commercial, and industrial electrical networks. Designed with MOV + GDT hybrid technology, it offers fast response time, high discharge capacity, and stable protection for main switchboards, distribution panels, PV systems, and critical equipment.

    01

    Product principle and working conditions

    1.Meets both Class Ⅰ(10/350 μs) and Class Ⅱ(8/20 μs) SPD tests
    2.Based on zinc oxide technology
    3.Using 34S-H high-performance MOV,the maximum will be up to 10/350 μs 8kA
    4.No power frequency continuous flow
    5.The operating environment temperature is -40℃~+80℃
    6.Remote signaling function is optional.
    7. When product fails,the green window turns to red and remote signaling provides remote alarm function

    02

    Technical parameter details

    Technical Data
    SPD Type Type 1+2/Class Ⅰ+Ⅱ
    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
    Response time  [tA] ≤25ns  
    Temporary overvoltage(TOV) withstand - 5 sec  [Ut] 335V 440V 440V 620V 335V
    Admissible short-circuit current [lsccr] 25kA
    Max, backup fuse 125AgL/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. Make sure the electricity is turned off before installation. It is completely forbidden to operate when electrified.
    2. It is advised to connect a circuit breaker or fuse in series with the surge protection module's front end.
    3. During installation, adhere to the installation schematic for connection. Steer clear of bad connections. Close the circuit breaker (or fuse) switch after installation, then make sure everything is operating normally.
    4. After installation, make sure the surge protection module is operating properly by putting it in place.
    5. Check the condition of the fault display window and conduct routine inspections of the surge protection module while in use. The surge protection module needs to be changed or repaired right away if the fault display window turns red or if the remote signaling terminal emits an alert signal.
     6. It is recommended to install parallel-connected power surge protection devices. The connection wires need to be straight, short, thick, dependable, and secure.