Data Sheet

© DEHN + SÖHNE GmbH + Co. KG · Hans-Dehn-Str. 1 · Postfach 1640 · D-92306 Neumarkt · Tel. [phone] · www.dehn.de
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Product Data Sheet: DEHNrail modular, multipole
DR M 4P 255 (953 400)
■ Four-pole surge arrester consisting of a base element and a plug-in protection module
■ High discharge capacity due to heavy-duty zinc oxide varistor / spark gap combination
■ Energy coordination with other arresters of the Red/Line product family
Figure without obligation
Basic circuit diagram DR M 4P 255 Dimension drawing DR M 4P 255
Four-pole surge arrester consisting of a base part and a plug-in protection module; FM version with floating remote signalling contact.
Type
DR M 4P 255

Part No.
953 400

SPD according to EN 61643-11 / IEC 61643-11
type 3 / class III

Nominal voltage (a.c.) (U
N
)
230 / 400 V (50 / 60 Hz)

Max. continuous operating voltage (a.c.) (U
C
)
255 / 440 V (50 / 60 Hz)

Nominal load current (a.c.) (I
L
)
25A

Nominal discharge current (8/20 µs) (I
n
)
3kA

Total discharge current (8/20 µs) [L1+L2+L3+N-PE] (I
total
)
8kA

Combination wave (U
OC
)
6kV

Combination wave [L1+L2+L3+N-PE] (U
OC total
)
16kV

Voltage protection level [L-N] / [L/N-PE] (U
P
)
≤ 1000 / ≤ 1500V

Response time [L-N] (t
A
)
≤ 25ns

Response time [L/N-PE] (t
A
)
≤ 100ns

Max. mains-side overcurrent protection
25 A gG or B 25 A

Short-circuit withstand capability for mains-side overcurrent
protection with 25 A gL/gG (I
SCCR
)
6 kA
rms


Temporary overvoltage (TOV) [L-N] (U
T
) – Characteristic
335 V / 5 sec. – withstand

Temporary overvoltage (TOV) [L-N] (U
T
) – Characteristic
440 V / 120 min. – safe failure

Temporary overvoltage (TOV) [L/N-PE] (U
T
) – Characteristic
335 V / 120 min. – withstand

Temporary overvoltage (TOV) [L/N-PE] (U
T
) – Characteristic
440 V / 5 sec. – withstand

Temporary overvoltage (TOV) [N-PE] (U
T
) – Characteristic
1200 V / 200 ms – safe failure

Operating temperature range (T
U
)
-40 °C ... +80 °C

Operating state / fault indication
green / red

Number of ports
1

Cross-sectional area (min.)
0.5 mm
2
solid / flexible

Cross-sectional area (max.)
4 mm
2
stranded / 2.5 mm
2
flexible

For mounting on
35 mm DIN rails acc. to EN 60715

Enclosure material
thermoplastic, red, UL 94 V-0

Place of installation
indoor installation

Degree of protection
IP 20

Capacity
2 modules, DIN 43880

Approvals
KEMA, VDE

Weight
147g

Customs tariff number (Comb. Nomenclature EU)
85363030

GTIN
4013364115767

PU
1pc(s)

We reserve the right to introduce changes in performance, configuration and technology, dimensions, weights and materials in the course of technical progress. The figures are shown without obligation.