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Special Surge and Over Voltage Arrester

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Special Surge Arresters

DM-24 SECURE

DM-48 SECURE

Special surge and overvoltage arrester

Fault signalling due to supply interruption, remote fault signalling

Designed to protect M&C against pulse overvoltage effects and steady overvoltage. It is resistant to steady overvoltage from low-voltage (high-voltage) distributions.

Technical data

DM-24 SECURE

DM-48 SECURE

Location SPD

ST 2+3

ST 2+3

Nominal voltage Un

24 V DC

48 V DC

Maximum operating voltage U

36 V DC / 25,5 V AC

60 V DC / 42,5 V AC

Nominal current IL

200 mA

200 mA

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

3 kA

3 kA

C2 voltage protection level line - line at In UP

55 V

95 V

C2 voltage protection level line - PE at In Up

650 V

1,15 kV

Series resistance per line R

3 Ω

6 Ω

Threshold frequency line - line fG

1,4 MHz

1,9 MHz

Response time line - line ta

1 ns

1 ns

Response time line - PE ta

100 ns

100 ns

Degree of protection

IP 20

IP 20

Range of operating temperatures

– 40 °C … + 80 °C

– 40 °C … + 80 °C

Remote indication

AC: 250 V/ 0,5 A; DC: 250 V / 0,1 A

AC: 250 V/ 0,5 A; DC: 250 V / 0,1 A

Ordering number

8595090520689

8595090516934

For more Details kindly check attachment.

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