DA-275 DF 25 SPD type 3 – Surge Arrester with RFI

DA-275 DF 25 SPD type 3 – Surge Arrester with RFI

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Surge Arresters

DA-275 DF 25

SPD type 3 – surge arrester with RFI filter Visual fault signaling Surge protection with an integrated RFI filter designed to protect M&C, ESS, EFS, etc. control systems against pulse overvoltage and RF disturbance.

Technical data

DA-275 DF25

Nominal voltage Un

230 V AC

Maximum operating voltage Uc

275 V AC

Nominal load current IL

25 A

Nominal discharge current (8/20 μs) L-N, L(N)-PE, L+N-PE In

3 kA, 3 kA, 5 kA

Test voltage L-N, L(N)-PE, L+N-PE Uoc

6 kV, 6 kV, 10 kV

Voltage protection level L-N, L(N)-PE Up

1,2 kV, 1,5 kV

Response time L-N, L(N)-PE ta

25 ns, 100 ns

Maximum overcurrent protection

25 A gL/gG nebo C25 A

Filter attenuation at 1 MHz (50 Ω/50 Ω) unsymmetrical

30 dB

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: 1/50 mm2 ; AWG: 17/1

ISO: 1/35 mm2 ; AWG: 17/2

Tightening torque

max. 4 Nm

Fault indication

red indicator

Meets the requirements of standard

EN 61643-11 + A11T3

Ordering number