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Surge Protector
T2 Surge Protector Device (AC)
  • LD-MD Series
T2 Surge Protector Device (AC)
Product Overview
The AC T2 Class Surge Protector Device (SPD) is installed in IPZ0-1 and above to protect low voltage equipment from lightning strike and surge damage. Applicable to PSD I+II class (B+C class) of various power supply systems. Designed according to IEC 61643-1/GB/T18802.1.

This product has the following features: 10/350μs, 8/20μs spark gap. It adopts sealed GDT technology, high discharge current capacity, extremely low voltage protection level, double terminals in parallel or series, multifunctional connection of conductors and busbars. In the event of a fault, the green window will turn red and a remote alarm terminal is provided. It uses high-performance MOV and can handle a maximum of up to 10/350 7kA.

LD

MD

-

/

R



LEIDUN

Surge protector Device (SPD)


Maximum discharge current


1P、2P、3P、4P

With remote signaling or communication and remote alarmand remote alarm

Lightning protection level

(T2)

 


Model

LD-MD-A20

LD-MD-A40

LD-MD-A60

LD-MD-A80

LD-MD-A100

Maximum continuous operating voltage

275V/385V/420V

275V/385V/420V

275V/385V/420V

275V/385V/420V

275V/385V/420V

SPD Category

Voltage limiting type

Voltage limiting type

Voltage limiting type

Voltage limiting type

Voltage limiting type

Nominal discharge current (In)

10kA

20kA

30kA

40kA

60kA

Maximum discharge current  (Imax)

20kA

40kA

60kA

80kA

100kA

Voltage protection level (Up)

≤1.5kV

≤1.8kV

≤2.0kV

≤2.2kV

≤2.5kV

Response time

≤25ns

Maximum spare fuse

125A gL/gG

Operating temperature range(Parallel Circuits)

-40℃~+80℃

Installation wire cross-sectional area

1.5~25mm2 Solid/ 35mm2 Flexibility

Installation method

35mm DIN rail

Shell material

RED / WHITE(Modules)/ Dark Gray(Base)Thermoplastics,UL94-V0

Test standards

IEC 61643-1; GB/T18802.11-2020

Remote signal installation connection type

Switch contacts

 


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