DEHNrail modular

  • Two-pole surge arrester consisting of a base part 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
  • Operating state/fault indication by green / red indicator flag in the inspection window
  • Narrow (modular) design according to DIN 43880
  • Easy replacement of protection modules due to module locking system with module release button
  • Vibration and shock-tested according to EN 60068-2

DEHNrail DR M 2P 255
Part No. 953200 DR M 2P 255
GTIN 4013364108301, Customs tariff No.: 85363030, Gross weight: 91.70 g, PU: 1.00 pc(s)

DEHNrail DR M 2P 255

Basic circuit diagram DEHNrail DR M 2P

Dimension drawing DEHNrail DR M 2P

Disassembling DEHNrail DR M 2P 255

DEHNrail DR M 2P 255 pic1

DEHNrail M 2P…
Two-pole surge arrester consisting of a base part and a plug-in protection module.

Technical data

TypeDR M 2P 30DR M 2P 60DR M 2P 75DR M 2P 150DR M 2P 255
Part No.953 201953 202953 203953 204953 200
SPD according to EN 61643-11 / IEC 61643-11type 3 / class III
Nominal voltage (a.c.) (UN) (50 / 60 Hz)24 V48 V60 V120 V230 V
Max. continuous operating voltage (a.c.) (UC) (50 / 60 Hz)30 V60 V75 V150 V255 V
Max. continuous operating voltage (d.c.) (UC)30 V60 V75 V150 V255 V
Nominal load current (a.c.) (IL)25 A
Nominal discharge current (8/20 μs) (In)1 kA1 kA2 kA2 kA3 kA
Total discharge current (8/20 μs) [L+N-PE] (Itotal)2 kA2 kA4 kA4 kA5 kA
Combination wave (UOC)2 kV2 kV4 kV4 kV6 kA
Combination wave [L+N-PE] (UOC total)4 kV4 kV8 kV8 kV10 kV
Voltage protection level [L-N] (UP)≤ 180 V≤ 350 V≤ 400 V≤ 640 V≤ 1250V
Voltage protection level[N-PE] (UP)≤ 630 V≤ 730 V≤ 730 V≤ 800 V≤ 1500 V
Response time [L-N] (tA)≤ 25 ns
Response time [L/N-PE] (tA)≤ 100 ns
Max. mains-side overcurrent protection25 A gL/gG or B 25 A
Short-circuit withstand capability for mains-side overcurrentprotection with 25 A gG (ISCCR)6 kArms
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic335 V / 5 sec. – withstand
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic440 V / 120 min. – safe failure
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic335 V / 120 min. – withstand
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic440 V / 5 sec. – withstand
Temporary overvoltage (TOV) [L+N-PE] (UT) – Characteristic1200 V + UREF / 200 ms – safe failure
Operating temperature range (TU)-40°C…+80°C
Operating state / fault indicationgreen / red
Number of ports1
Cross-sectional area (min.)0.5 mm2 solid / flexible
Cross-sectional area (max.)4 mm2 solid / 2.5 mm2 flexible
For mounting on35 mm DIN rails acc. to EN 60715
Enclosure materialthermoplastic, red, UL 94 V-0
Place of installationindoor installation
Degree of protectionIP 20
Capacity1 module(s), DIN 43880
ApprovalsKEMA, VDE, UL, CSA

DEHNrail M 2P … FM
Two-pole surge arrester consisting of a base part and a plug-in protection module; with floating remote signalling contact.

DEHNrail DR M 2P 30 FM

Basic circuit diagram DEHNrail DR M 2P FM

Dimension drawing DEHNrail DR M 2P FM

Technical data

TypeDR M 2P 30 FMDR M 2P 60 FMDR M 2P 75 FMDR M 2P 150 FMDR M 2P 255 FM
Part No.953 206953 207953 208953 209953 205
SPD according to EN 61643-11 / IEC 61643-11type 3 / class III
Nominal voltage (a.c.) (UN) (50 / 60 Hz)24 V48 V60 V120 V230 V
Max. continuous operating voltage (a.c.) (UC) (50 / 60 Hz)30 V60 V75 V150 V255 V
Max. continuous operating voltage (d.c.) (UC)30 V60 V75 V150 V255 V
Nominal load current (a.c.) (IL)25 A
Nominal discharge current (8/20 μs) (In)1 kA1 kA2 kA2 kA3 kA
Total discharge current (8/20 μs) [L+N-PE] (Itotal)2 kA2 kA4 kA4 kA5 kA
Combination wave (UOC)2 kV2 kV4 kV4 kV6 kA
Combination wave [L+N-PE] (UOC total)4 kV4 kV8 kV8 kV10 kV
Voltage protection level [L-N] (UP)≤ 180 V≤ 350 V≤ 400 V≤ 640 V≤ 1250V
Voltage protection level[N-PE] (UP)≤ 630 V≤ 730 V≤ 730 V≤ 800 V≤ 1500 V
Response time [L-N] (tA)≤ 25 ns
Response time [L/N-PE] (tA)≤ 100 ns
Max. mains-side overcurrent protection25 A gL/gG or B 25 A
Short-circuit withstand capability for mains-side overcurrentprotection with 25 A gG (ISCCR)6 kArms
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic335 V / 5 sec. – withstand
Temporary overvoltage (TOV) [L-N] (UT) – Characteristic440 V / 120 min. – safe failure
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic335 V / 120 min. – withstand
Temporary overvoltage (TOV) [L/N-PE] (UT) – Characteristic440 V / 5 sec. – withstand
Temporary overvoltage (TOV) [L+N-PE] (UT) – Characteristic1200 V + UREF / 200 ms – safe failure
Operating temperature range (TU)-40°C…+80°C
Operating state / fault indicationgreen / red
Number of ports1
Cross-sectional area (min.)0.5 mm2 solid / flexible
Cross-sectional area (max.)4 mm2 solid / 2.5 mm2 flexible
For mounting on35 mm DIN rails acc. to EN 60715
Enclosure materialthermoplastic, red, UL 94 V-0
Place of installationindoor installation
Degree of protectionIP 20
Capacity1 module(s), DIN 43880
ApprovalsKEMA, VDE, UL, CSA
Type of remote signalling contactchangeover 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 terminalsmax. 1.5 mm2 solid / flexible

Our T3 TLP series is more competitive and can replace DEHNrail modular – DR M 2P

AC Surge Protective Device SPD Type 3, T3, Class D, Class III TLP series