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Dp-024 Surge Arrester for Low-voltage

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Surge Arresters


Surge arrester for low-voltage power supplies Visual fault signaling Designed to protect a line of equipment connected to distributions of DC and AC supply voltage. According to the concept of lightning protection zones, it is installed at the boundary of LPZ 1–LPZ 2 zones and higher.

Technical Data


Location SPD

ST 2

Nominal voltage Un

24 V AC/DC

Maximum operating voltage Uc

44 V DC / 22 V AC

Nominal current IL

16 A

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

2 kA

C2 voltage protection level line - line at In UP

200 V

C2 voltage protection level line - PE at In Up

530 V

C3 voltage protection level line - line at 1 kV/μs In

2 kA, 2 kA

C3 voltage protection level line - PE at 1 kV/μs Uoc

4 kV, 4 kV

voltage protection level a1–b1, a1 (b1) – PE Up

200 V, 530 V

Maximum current protection

16 A gL/gG or C 16 A

Response time line - line ta

25 ns

Response time line - PE ta

100 ns

Degree of protection

IP 20

Range of operating temperatures

– 40 °C … + 80 °C

Mounting on

DIN rail 35 mm

Cross-section of connected conductors

Solid max

Stranded max

ISO: 4 mm2 ; AWG: 11

ISO: 2,5 mm2 ; AWG: 13

Tightening torque

0,6 Nm

Fault indication

red indicator

Meets the requirements of standard

EN 61643-21

EN 61643-11 + A11 T3

Ordering number



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