Industrial Surge Protective Device 275V AC 3p | LKX-T1T2-AC
Summary
LKX-B+C 275V 10kA is for installation at LPZ 0A-1 or higher, protecting low voltage equipment from surge damage. Applied in modular SPD Class I+II (Class B+C) for for various power supply system single-pole protection module. Designed according to IEC 61643-11/EN 61643-11/GB18802.11.
Hightlight Features
• 10/350, 8/20us varistor; Lightning impulse current to Iimp 10kA.
• Three-poles high discharge capacity surge arrester.
• Consist of varistors and thermal disconnection devices.
• Double terminal for parallel or series (V-shape) connection.
• Multifunctional connection for conductors and busbar.
• Windows will change to red when fault and also provide remote alarm control at the same time.
Technical data
|
Type |
LKX-B+C 275V 10kA |
|
Rated voltage (max. continuous voltage) [Uc] |
275V AC |
|
Lightning impulse current (10/350) [Iimp] |
10kA |
|
Nominal discharge current (8/20) [In] |
20kA |
|
Max. discharge current (8/20) [Imax] |
40kA |
|
Voltage protection level at In [Up] |
≤ 1.5kV |
|
Response time [tA] |
≤ 25ns |
|
TOV voltage |
335V/5sec |
|
Max. back up fuse [L] |
200A gL/gG |
|
Max. back up fuse [L-L’] |
125A gL/gG |
|
Operating temperature range [Tu] |
-40°C...+80°C |
|
Cross-sectional area |
35mm2 solid /50mm2 flexible |
|
Mounting on |
35mm DIN rail |
|
Enclosure material |
Light grey thermoplastic, UL94-V0 |
|
Dimension |
2 mods (36mm) |
|
Test standards |
IEC 61643-11; EN 61643-11; GB18802.11 |
|
Certification |
CE (LVD, EMC); ISO |
|
Type of remote signalling contact |
Switching contact |
|
Switching capacity |
AC:250V/0.5A; DC:250V/0.1A;150V/0.2A;750V/0.5A |
|
Cross-sectional area for remote signalling contact |
Max. 1.5mm2 solid / flexible |
|
Type |
LKX-B+C 275V 10kA |
|
Packing unit |
1pc(s) |
Installation Diagram
275V T1+T2 3P AC Surge Protective Device for 3-Phase Power Systems
This surge protection device is engineered for 3-phase AC power distribution systems and integrates both Type 1 and Type 2 protection in a single unit. It safely discharges direct lightning strikes (10/350 μs waveform) and shields electrical systems from induced or switching surges (8/20 μs waveform). With a continuous operating voltage of 275V AC, it's an ideal choice for main distribution panels in commercial facilities, factories, and other high-risk environments.
Perfect for:
✔️ Three-phase surge protection
✔️ Main switchboard lightning protection
✔️ 275V AC power supply systems
✔️ T1+T2 combined SPD for industrial applications
✔️ High-energy surge protection device for commercial buildings
✔️ DIN rail mounted SPD for distribution boards
✔️ AC surge suppressor for lightning-prone areas