AC Surge Protective Device

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AC Surge Protective Device SPD Surge Protection Device


AC Surge Protective Devices are designed to protect against transient surge conditions. Large single surge events, such as lightning, can reach hundreds of thousands of volts and can cause immediate or intermittent equipment failure. However, lightning and utility power anomalies only account for 20% of transient surges. The remaining 80% of surge activity is produced internally. Although these surges may be smaller in magnitude, they occur more frequently and with continuous exposure can degrade sensitive electronic equipment within the facility.

LSP has a comprehensive line of surge protection devices to meet your needs, regardless of the exposure risk. They help reduce costly downtime and protect sensitive electronic equipment against the damaging effects of transients caused by lightning surge current, utility switching, internal load switching, and more. Each unit is independently tested and backed by the largest engineering and technical support in the industry.

LSP is a real AC&DC surge protection device (SPD) manufacturer, also provide OEM/ODM service. some of the products approved by TUV, CB, CE, EAC according to IEC 61643-11:2011 and EN 61643-11:2012.

T1, Class B, Class I, Iimp(10/350μs): 25kA/50kA
T1+T2, Class B+C, Class I+II, Iimp(10/350μs): 7kA/12,5kA/25kA
T2, Class C, Class II, In(8/20μs): 10/20kA, Imax(8/20μs): 20/40kA
T3, Class D, Class III, Uoc(1.2/50μs): 10kV, In(8/20μs): 5kA, Imax(8/20μs): 10kA

AC SPD voltage (Un): 60Vac, 120Vac, 230Vac, 400Vac, 480VAc, 690Vac, 900Vac
AC SPD voltage (Uc): 75Vac, 150Vac, 275Vac, 320VAc, 385Vac, 440Vac, 600Vac, 750Vac, 1000Vac

We have 11 years of experience in the lighting and surge protection field and provide 5 years limited warranty.

AC Surge Protector Device T1 / Class B / Class I FLP25 series


  • SPD according to IEC 61643-11 & EN 61643-11 standard
  • Nominal discharge current In 25 kA (8/20 μs) per path
  • Maximum discharge current Imax 100 kA (8/20 μs)
  • Impulse Discharge Current Iimp 25 kA (10/350 μs)
  • Max. continuous operational voltage Uc from 150 to 600 V AC
  • Monoblock module design
  • Optional remote indication contact

AC Surge Protective Device T1+T2 / Class B+C / Class I+II FLP12.5 series


  • SPD according to IEC 61643-11 & EN 61643-11 standard
  • Nominal discharge current In 20 kA (8/20 μs) per path
  • Maximum discharge current Imax 50 kA (8/20 μs)
  • Impulse Discharge Current Iimp 12.5 kA (10/350 μs)
  • Max. continuous operational voltage Uc from 75 to 440 V AC
  • Plug-in module design with status indication
  • Optional remote indication contact

AC Surge Arrester T1+T2 / Class B+C / Class I+II FLP7 series


  • SPD according to IEC 61643-11 & EN 61643-11 standard
  • Nominal discharge current In 20 kA (8/20 μs) per path
  • Maximum discharge current Imax 50 kA (8/20 μs)
  • Impulse Discharge Current Iimp 7 kA (10/350 μs)
  • Max. continuous operational voltage Uc from 75 to 600 V AC
  • Plug-in module design with status indication
  • Optional remote indication contact

AC Surge Protective Device T2 / Class C / Class II SLP40 series


  • SPD according to IEC 61643-11 & EN 61643-11 standard
  • Nominal discharge current In 20 kA (8/20 μs) per path
  • Maximum discharge current Imax 40 kA (8/20 μs)
  • Max. continuous operational voltage Uc from 75 to 1000 V AC
  • Plug-in module design with status indication
  • Optional remote indication contact

AC Surge Protective Device T2+T3 / Class C+D / Class II+III SLP20 series


  • SPD according to IEC 61643-11 & EN 61643-11 standard
  • Nominal discharge current In 10 kA (8/20 μs) per path
  • Maximum discharge current Imax 20 kA (8/20 μs)
  • Max. continuous operational voltage Uc from 75 to 1000 V AC
  • Plug-in module design with status indication
  • Optional remote indication contact

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