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Banarsi Complex, Ist Floor, Opposite Umrao Theatre, Nishatganj
Lucknow, Uttar Pradesh-226006, India+(91)-522-4077769
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CLSA-ISDN Surge Arrester for Telecommunications

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Surge Arresters


Surge arrester for telecommunications For LSA-PLUS disconnection module Combination of coarse and fine protection designed to protect one pair of ISDN lines of telecommunication equipment.

Technical data


Location SPD

ST 2+3

Maximum operating voltage Uc

120 V DC / 85 V AC

Nominal current @ 25 °C IL

500 mA

C2 nominal discharge current (8/20 μs) per line In

5 kA

C2 total discharge current (8/20 μs) Itotal

10 kA

C2 voltage protection level line – line at In UP

220 V

C2 voltage protection level line – PE at In Up

400 V

C3 voltage protection level line – line at 1 kV/μs Up

170 V

C3 voltage protection level line – PE at 1 kV/μs Up

350 V

Series resistance per line R

1,6 Ω

Threshold frequency fG

16 MHz

Response time line - line ta

1 ns

Response time line - PE ta

100 ns

Degree of protection

IP 20

Range of operating temperatures

-40 °C … +70 °C

Mounting on

LSA – PLUS (Krone)

Meets the requirements of standard

EN 61643-21 + A1, A2

Ordering number



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