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: DEHNshield®
DSH B TNS 255 FM (941 406)
■ Application-optimised and prewired spark-gap-based type 1 and type 2 combined lightning current and surge arrester
■ Compact design due to space-saving spark gap technology with a width of only 1 module / pole
■ Meets the minimum requirements according to IEC 60364-5-53 concerning the nominal discharge capacity I
n
and the lightning current
discharge capacity I
imp
in case of overhead line supply
Figure without obligation
Basic circuit diagram DSH B TNS 255 FM Dimension drawing DSH B TNS 255 FM
Application-optimised and prewired combined lightning current and surge arrester for TN-S systems; with floating remote signalling contact.
Type
DSH B TNS 255 FM

Part No.
941 406

SPD according to EN 61643-11 / IEC 61643-11
type 1 + type 2 / class I + class II

Energy coordination with terminal equipment (≤ 10 m)
type 1 + type 2 + type 3

Nominal voltage (a.c.) (U
N
)
230 / 400 V (50 / 60 Hz)

Max. continuous operating voltage (a.c.) (U
C
)
255 (50 / 60 Hz)

Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE] (I
total
)
30kA

Lightning impulse current (10/350 µs) [L, N-PE] (I
imp
)
7.5kA

Nominal discharge current (8/20 µs) [L/N-PE]/[L1+L2+L3+N-PE]
(I
n
)
12.5 / 50kA

Voltage protection level [L-PE]/[N-PE] (U
P
)
≤ 1.5 / ≤ 1.5 kV

Follow current extinguishing capability (a.c.) (I
fi
)
25kA
rms

Follow current limitation / Selectivity
no tripping of a 32 A gG fuse up to 25 kA
rms
(prosp.)

Response time (t
A
)
≤ 100ns

Max. mains-side overcurrent protection
160A gG

Temporary overvoltage (TOV) [L-N] (U
T
) – Characteristic
440 V / 120 min. – withstand

Operating temperature range (T
U
)
-40 °C ... +80 °C

Operating state / fault indication
green / red

Number of ports
1

Cross-sectional area (L1, L2, L3, N, PE, 9) (min.)
1.5 mm
2
solid / flexible

Cross-sectional area (L1, L2, L3, N, PE, 9) (max.)
35 mm
2
stranded / 25 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
4module(s), DIN 43880

Approvals
VDE

Type of remote signalling contact
changeover contact

Switching capacity (a.c.)
250 V / 0.5 A

Switching capacity (d.c.)
250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A

Cross-sectional area for remote signalling terminals
max. 1.5 mm
2
solid / flexible

Weight
429g

Customs tariff number (Comb. Nomenclature EU)
85363090

GTIN
4013364328082

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.