DEHNguard ME/SE DC ... (FM)

Modular combined arrester / surge arrester for DC

For protecting low-voltage consumer's installations against surges. For installation in conformity with the lightning protection zone concept at the boundaries from 0B– 1 and higher.
  • Universal combined arrester / surge arrester consisting of a base part and a plug-in protection module
  • Device concept specifically developed for use in d.c. circuits
  • Powerful d.c. switching device DCD prevents fire damage caused by d.c. switching arcs
  • Use without additional backup fuse in defined applications
  • Operating state / fault indication by green / red indicator flag in the inspection window
  • Easy replacement of protection modules without tools due to module locking system with module release button

Version

DEHNguard ME DC ... FM: Multi-pole combined arrester for d.c. applications up to 950 V
DEHNguard SE DC ...: Single-pole, modular surge arrester for d.c. application
DEHNguard SE DC ... FM: With remote signalling contact for monitoring device (floating changeover contact)

Details

The modular devices of the DEHNguard SE DC product series are coordinated single-pole type 2 surge arresters with a functional design.
When developing this device series for protecting d.c. systems, the main focus was on the increased requirements of d.c. applications with regard to device safety in all operating states. The extremely powerful d.c. switching device DCD, which prevents fire damage caused by switching arcs, is the core of the DEHNguard SE DC devices.

DEHNguard SE DC … (FM) is, in the corresponding voltages, coordinated with DEHNsecure … (FM) type 1 lightning current arresters.

The DEHNguard SE DC devices combine high performance and ease of use in a single device. Their electrical parameters are rated for the most stringent requirements within lightning and surge protection systems. The high number of features shows that the main focus is both on reliable surge protection and device safety.

Proven heavy-duty varistors are used to discharge high impulse currents and limit the destructive surge impulses to the specified voltage protection level values. The operating state of the arrester is permanently monitored via the surface temperature of the heavy-duty varistor and the d.c. switching device DCD is immediately activated in case of overload. The mechanical visual indicator with green and red indicator flags, which is available for each protective path, is directly connected to the d.c. switching device DCD. When the red indication appears in the inspection window, the d.c. switching device DCD has already safely interrupted the d.c. switching arc and thus reliably prevented fire damage. In case of the DEHNguard SE DC … FM version, the arrester status can be additionally indicated via a three-pole remote signalling terminal.

The special design of the d.c. switching device DCD even ensures a short-circuit withstand capability up to 300 A d.c. – without arrester backup fuse (!). In combination with the specified backup fuses, the short-circuit withstand capability can be even increased to 25,000 A d.c., which is certainly an innovation in the field of d.c. applications.

The single-pole devices are available for voltages from 60 V to 900 V d.c. and thus DEHNguard SE DC surge arresters type 2 can be used for a variety of applications such as emergency power supply systems, d.c. systems for direct supply of d.c. drives, control circuits and battery-operated supply systems of any kind.

To implement these numerous features, the devices incorporate the modular Red/Line family design with a width of 1.5 modules. The mechanical design of the connection points is another safety feature. The covered screws provide additional shock protection and the projections for easily and safely entering the cable increase clearances and creepage distances so that no distance to other equipment must be maintained even in case of voltages up to 900 V d.c.

The coded plug-in protection modules ensure a high degree of protection. Consequently, damage caused by installing an incorrect module can be virtually excluded.

The universal T1 + T2 combined arrester is specially designed for use in case of current sources up to 950 V.

Models

+
DEHNguard ME DC ... FM

DEHNguard SE DC ...

DEHNguard SE DC ... FM

+ DEHNguard ME DC ... FM

Basic circuit diagram DG ME DC Y 950 FMDimension drawing DG ME DC Y 950 FM

Modular combined arrester for DC applications; with floating remote signalling contact.


Specifications

Type
Part No.
SPD analogous to EN 61643-11 / IEC 61643-11
Nominal voltage (d.c.) (UN)
Max. continuous operating voltage (d.c.) (UC)
Lightning impulse current (10/350 µs) (Iimp)
Nominal discharge current (8/20 µs) (In)
Voltage protection level [DC+ -> DC-] (UP)
Voltage protection level [(DC+/DC-) --> PE] (UP)
Max. short circuit withstand capability (ISCCR)
Temporary overvoltage (TOV) [DC+ -> DC-] (UT) – Characteristic
Temporary overvoltage (TOV) [DC+/- -> PE] (UT) – Characteristic
Operating temperature range (TU)
Operating state / fault indication
Number of ports
Cross-sectional area (min.)
Cross-sectional area (max.)
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity
Approvals
Type of remote signalling contact
Switching capacity (a.c.)
Switching capacity (d.c.)
Cross-sectional area for remote signalling terminals
Extended technical data:
– Residual voltage (Ures) @ 1.2 kA
– Use in DC battery storage systems up to ISCCR
– Required backup fuse
Weight
GTIN
PU
Part No.
  • DG ME DC Y 950 FM
  • 972 146
  • type 1 + type 2 / class I + class II
  • 860 V
  • 950 V
  • 5 kA
  • 12.5 kA
  • ≤ 4 kV
  • ≤ 3.2 kV
  • 500 A / 170 ms
  • 950 V (UTOV = UC)
  • 950 V / 10 sec. – withstand
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 4 module(s), DIN 43880
  • UL
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • -------------------------------
  • 2,5 kV
  • ≤ 50 kA (t 4 ms)
  • Bussman HLS 2000Vdc / 200 A 2+/A173 DST aR, manufacturer's Part No.: 170M2040
  • 497 g
  • 4013364347960
  • 1 pc(s)
  • 972 146
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram DG ME DC Y 950 FM
      open PDF
      Dimension drawing DG ME DC Y 950 FM
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard ME DC Y 950 FM combined arrester Type 1+2
      3-pole, modular, plug-in combined arrester
      for direct current applications, width 4 mods
      Mechanical operating / fault state indication
      Arrester UL approval
      Type 1+2 analogous to EN 61643-11
      Y circuit consisting of leakage-current-free varistor
      gas discharge tube technology
      DC switching device DCD specifically for use in DC current
      circuits up to 950V
      Max. continuous operating voltage: 950 V DC 
      Lightning impulse current 5kA (10/350µs)
      Nominal discharge current: 12.5 kA (8/20µs)
      Floating remote signalling contact as changeover contact
      Vibration and shock-tested according to EN 60068

      delivery and installation.

      Brand: DEHN
      Type: DG ME DC Y 950 FM
      Part No.: 972 146

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_ME_DC_Y_950_FM
      COC 20180808 E319777 Vol 1 Sec 23
      CAD-Data for registered Users
      972146.stp
      972146.igs
      972146.jt
      972146.dwg
      972146m_E.dxf

DEHNguard SE DC ...

Basic circuit diagram DG SE DC ...Dimension drawing DG SE DC ...

Modular single-pole surge arrester for d.c. applications.


Specifications

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-11
Energy coordination with terminal equipment (≤ 10 m)
Nominal voltage (d.c.) (UN)
Max. continuous operating voltage (d.c.) (UC)
Nominal discharge current (8/20 µs) (In)
Voltage protection level (UP)
Response time (tA)
Short-circuit withstand capability without backup fuse (d.c.) (ISCCR)
Short-circuit withstand capability for max. mains-side overcurrent protection (d.c.) (ISCCR)
Max. mains-side overcurrent protection
Temporary overvoltage (TOV) d.c. (UT) - Characteristic
Temporary overvoltage (TOV) d.c., 2x UC (UT) - Characteristic
Operating temperature range (TU)
Operating state / fault indication
Number of ports
Cross-sectional area (min.)
Cross-sectional area (max.)
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity
Extended technical data:
d.c. and a.c. operation
Max. continuous operating voltage (a.c.) (UC)
Max. backup fuse
Weight
GTIN
PU
Part No.
  • DG SE DC 60
  • 972 110
  • type 2 / class II
  • type 2 + type 3
  • 48 V
  • 60 V
  • 12.5 kA
  • ≤ 0.5 kV
  • ≤ 25 ns
  • 300 A
  • 25 kA
  • 35 A gG
  • 70 V / 5 sec. – withstand
  • 120 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP 20
  • 1.5 module(s), DIN 43880
  • use for safety lighting systems
  • no
  •  
  •  
  • 138 g
  • 4013364158504
  • 1 pc(s)
  • 972 110
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram DG SE DC 60
      open PDF
      Dimension drawing DG SE DC 60
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 60 surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 60 V d.c.
      Voltage protection level: 	<= 0.5 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 60
      Part No.: 972 110

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_60_FM
      CAD-Data for registered Users
      972120.stp
      972120.igs
      972120.jt
      972120.dwg
      972110m_E.dxf
  • DG SE DC 242
  • 972 120
  • type 2 / class II
  • type 2 + type 3
  • 220 V
  • 242 V
  • 12.5 kA
  • ≤ 1.25 kV
  • ≤ 25 ns
  • 300 A
  • 25 kA
  • 35 A gG
  • 320 V / 5 sec. – withstand
  • 484 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DINs rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • use for safety lighting systems
  • yes
  • 255 V
  • 10 A gG
  • 148 g
  • 4013364158528
  • 1 pc(s)
  • 972 120
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram DG SE DC 242
      open PDF
      Dimension drawing DG SE DC 242
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 242 surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 242 V d.c.
      Voltage protection level: <= 1.25 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 242
      Part No.: 972 120

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_242_FM
      CAD-Data for registered Users
      972120.stp
      972120.igs
      972120.jt
      972120.dwg
      972110m_E.dxf
  • DG SE DC 550
  • 972 130
  • type 2 / class II
  • type 2 + type 3
  • 500 V
  • 550 V
  • 12.5 kA
  • ≤ 2.0 kV
  • ≤ 25 ns
  • 200 A
  • 25 kA
  • 35 A gG
  • 726 V / 5 sec. – withstand
  • 1100 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DINs rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • use for safety lighting systems
  • no
  •  
  •  
  • 162 g
  • 4013364158627
  • 1 pc(s)
  • 972 130
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing DG SE DC 550
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 550 surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 550 V d.c.
      Voltage protection level: <= 2.0 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 550
      Part No.: 972 130

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_550_FM
      CAD-Data for registered Users
      972120.stp
      972120.igs
      972120.jt
      972120.dwg
      972110m_E.dxf
  • DG SE DC 900
  • 972 140
  • type 2 / class II
  • type 2 + type 3
  • 750 V
  • 900 V
  • 12.5 kA
  • ≤ 3.0 kV
  • ≤ 25 ns
  • 100 A
  • 25 kA
  • 80 A gPV
  • 1089 V / 5 sec. – withstand
  • 1800 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DINs rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • use for safety lighting systems
  • no
  •  
  •  
  • 168 g
  • 4013364158641
  • 1 pc(s)
  • 972 140
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing DG SE DC 900
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 900 surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Type 2 SPD according to EN 61643-11
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 900 V d.c.
      Voltage protection level: <= 3.0 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 900
      Part No.: 972 140

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_900_FM
      CAD-Data for registered Users
      972120.stp
      972120.igs
      972120.jt
      972120.dwg
      972110m_E.dxf

DEHNguard SE DC ... FM

Basic circuit diagram DG SE DC ... FMDimension drawing DG SE DC ... FM

Modular single-pole surge arrester for d.c. applications; with floating remote signalling contact.


Specifications

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-11
Energy coordination with terminal equipment (≤ 10 m)
Nominal voltage (d.c.) (UN)
Max. continuous operating voltage (d.c.) (UC)
Nominal discharge current (8/20 µs) (In)
Voltage protection level (UP)
Response time (tA)
Short-circuit withstand capability without backup fuse (d.c.) (ISCCR)
Short-circuit withstand capability for max. mains-side overcurrent protection (d.c.) (ISCCR)
Max. mains-side overcurrent protection
Temporary overvoltage (TOV) d.c. (UT) - Characteristic
Temporary overvoltage (TOV) d.c., 2x UC (UT) - Characteristic
Operating temperature range (TU)
Operating state / fault indication
Number of ports
Cross-sectional area (min.)
Cross-sectional area (max.)
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity
Type of remote signalling contact
Switching capacity (a.c.)
Switching capacity (d.c.)
Cross-sectional area for remote signalling terminals
Extended technical data:
d.c. and a.c. operation
Max. continuous operating voltage (a.c.) (UC)
Max. backup fuse
Weight
GTIN
PU
Part No.
  • DG SE DC 60 FM
  • 972 115
  • type 2 / class II
  • type 2 + type 3
  • 48 V
  • 60 V
  • 12.5 kA
  • ≤ 0.5  kV
  • ≤ 25 ns
  • 300 A
  • 25 kA
  • 35 A gG
  • 70 V / 5 sec. – withstand
  • 120 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • use for safety lighting systems
  • no
  •  
  •  
  • 142 g
  • 4013364158511
  • 1 pc(s)
  • 972 115
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 60 FM surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      With remote signalling contact
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 60 V d.c.
      Voltage protection level: <= 0.5 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 60 FM
      Part No.: 972 115

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_60_FM
      CAD-Data for registered Users
      972125.stp
      972125.igs
      972125.jt
      972125.dwg
      972115m_E.dxf
  • DG SE DC 242 FM
  • 972 125
  • type 2 / class II
  • type 2 + type 3
  • 220 V
  • 242 V
  • 12.5 kA
  • ≤ 1.25 kV
  • ≤ 25 ns
  • 300 A
  • 25 kA
  • 35 A gG
  • 320 V / 5 sec. – withstand
  • 484 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • use for safety lighting systems
  • yes
  • 255 V
  • 10 A gG
  • 152 g
  • 4013364158610
  • 1 pc(s)
  • 972 125
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 242 FM surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      With remote signalling contact
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 242 V d.c.
      Voltage protection level: <= 1.25 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 242 FM
      Part No.: 972 125

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_242_FM
      CAD-Data for registered Users
      972125.stp
      972125.igs
      972125.jt
      972125.dwg
      972115m_E.dxf
  • DG SE DC 550 FM
  • 972 135
  • type 2 / class II
  • type 2 + type 3
  • 500 V
  • 550 V
  • 12.5 kA
  • ≤ 2.0 kV
  • ≤ 25 ns
  • 200 A
  • 25 kA
  • 35 A gG
  • 726 V / 5 sec. – withstand
  • 1100 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • use for safety lighting systems
  • no
  •  
  •  
  • 167 g
  • 4013364158634
  • 1 pc(s)
  • 972 135
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 550 FM surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      With remote signalling contact
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 550 V d.c.
      Voltage protection level: <= 2.0 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 550 FM
      Part No.: 972 135

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_550_FM
      CAD-Data for registered Users
      972125.stp
      972125.igs
      972125.jt
      972125.dwg
      972115m_E.dxf
  • DG SE DC 900 FM
  • 972 145
  • type 2 / class II
  • type 2 + type 3
  • 750 V
  • 900 V
  • 12.5 kA
  • ≤ 3.0 kV
  • ≤ 25 ns
  • 100 A
  • 25 kA
  • 80 A gPV
  • 1089 V / 5 sec. – withstand
  • 1800 V / 120 min. – safe failure
  • -40 °C ... +80 °C
  • green / red
  • 1
  • 1.5 mm2 solid / flexible
  • 35 mm2 stranded / 25 mm2 flexible
  • 35 mm DIN rails acc. to EN 60715
  • thermoplastic, red, UL 94 V-0
  • indoor installation
  • IP20
  • 1.5 module(s), DIN 43880
  • changeover contact
  • 250 V / 0.5 A
  • 250 V / 0.1 A; 125 V / 0.2 A; 75 V / 0.5 A
  • max. 1.5 mm2 solid / flexible
  • use for safety lighting systems
  • no
  •  
  •  
  • 172 g
  • 4013364158658
  • 1 pc(s)
  • 972 145
  • Specifications (PDF)
  • More
    • Further Pictures
      Basic circuit diagram
      open PDF
      Dimension drawing
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DEHNguard SE DC 900 FM surge arrester
      Modular and pluggable single-pole surge arrester
      for d.c. applications, width: 1.5 modules 
      Fault indication
      Type 2 SPD according to EN 61643-11
      With remote signalling contact
      Heavy-duty varistor technology
      DCD d.c. switching device specifically for use in d.c. circuits 
      Max. continuous operating voltage: 900 V d.c.
      Voltage protection level: <= 3.0 kV
      Nominal discharge current: 12.5 kA
      Short-circuit strength in case of
      max. mains-side overcurrent protection (d.c.): 2000 A
      Energy-coordinated according to IEC 62305-4 
      with arresters of the Red/Line series

      delivery and installation.

      Brand: DEHN
      Type: DG SE DC 900 FM
      Part No.: 972 145

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_900_FM
      CAD-Data for registered Users
      972125.stp
      972125.igs
      972125.jt
      972125.dwg
      972115m_E.dxf

Accessories

Varistor-Based Protection Module for DEHNguard ME DC


Specifications

Type
Part No.
Max. continuous operating voltage (d.c.) (UC)
Weight
GTIN
PU

Spark-Gap Based Protection Module for DEHNguard ME DC


Specifications

Type
Part No.
Max. continuous operating voltage DC (UC)
Weight
GTIN
PU

Varistor-based Protection Module for DEHNguard SE DC

Varistor-based protection module for DEHNguard SE DC

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Specifications

Type
Part No.
Max. continuous operating voltage (d.c.) (UC)
Weight
GTIN
PU
  • DG MOD E DC 60
  • 972 010
  • 60 V
  • 48 g
  • 4013364158672
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DG MOD E DC 60 varistor-based protection module
      Pluggable protection module for DEHNguard SE DC ... (FM)
      Type 2 arrester of the Red/Line product series
      according to EN 61643-11
      Heavy-duty varistor technology
      Particularly suited for use in d.c. circuits 
      Max. continuous operating voltage: 60 V d.c.
      Nominal discharge current:  	12.5 kA
      Fault indication

      delivery and installation.

      Brand: DEHN
      Type: DG MOD E DC 60
      Part No.: 972 010

      or equivalent.
      Installation Instructions
  • DG MOD E DC 242
  • 972 020
  • 242 V
  • 57 g
  • 4013364158702
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DG MOD E DC 242 varistor-based protection module
      Pluggable protection module for DEHNguard SE DC ... (FM)
      Type 2 arrester of the Red/Line product series
      according to EN 61643-11
      Heavy-duty varistor technology
      Particularly suited for use in d.c. circuits 
      Max. continuous operating voltage: 242 V d.c.
      Nominal discharge current:  	12.5 kA
      Fault indication

      delivery and installation.

      Brand: DEHN
      Type: DG MOD E DC 242
      Part No.: 972 020

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_242_FM
  • DG MOD E DC 550
  • 972 030
  • 550 V
  • 71 g
  • 4013364158719
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DG MOD E DC 550 varistor-based protection module
      Pluggable protection module for DEHNguard SE DC ... (FM)
      Type 2 arrester of the Red/Line product series
      according to EN 61643-11
      Heavy-duty varistor technology
      Particularly suited for use in d.c. circuits  
      Max. continuous operating voltage: 550 V d.c.
      Nominal discharge current:  	12.5 kA
      Fault indication

      delivery and installation.

      Brand: DEHN
      Type: DG MOD E DC 550
      Part No.: 972 030

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_550_FM
  • DG MOD E DC 900
  • 972 040
  • 900 V
  • 77 g
  • 4013364158764
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      open PDF
      Further Information
      Product Specifications (Text)

      Back

      DG MOD E DC 900 varistor-based protection module
      Pluggable protection module for DEHNguard SE DC ... (FM)
      Type 2 arrester of the Red/Line product series
      according to EN 61643-11
      Heavy-duty varistor technology
      Particularly suited for use in d.c. circuits  
      Max. continuous operating voltage: 900 V d.c.
      Nominal discharge current:  	12.5 kA
      Fault indication

      delivery and installation.

      Brand: DEHN
      Type: DG MOD E DC 900
      Part No.: 972 040

      or equivalent.
      Installation Instructions
      Certificates
      CE_DG_SE_DC_900_FM

Earthing Clip for 1.5-module Enclosures, single-phase, two-pole

Earthing clip for connecting the earth terminal of e.g. two SPDs with 1.5-module enclosure to earth, with terminal.

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Specifications

Type
Part No.
Dimensions
Terminal
Weight
GTIN
PU
  • EB 1 2 1.5
  • 900 460
  • 34 x 60 x 28 mm
  • up to 25 mm2
  • 37 g
  • 4013364244146
  • 1 pc(s)
  • Specifications (PDF)
  • More
    • Further Pictures
      Further Information
      Product Specifications (Text)

      Back

      Two-pole EB 1 2 1.5 earthing clip
      Earthing clip for connecting the earth terminal of e.g. two
      SPDs with 1.5-module enclosure and terminal to earth
      Single-phase, two-pole
      Terminal up to 25 mm2
      Dimensions:	(31 x 60 x 28) mm

      delivery and installation.

      Brand: DEHN
      Type: EB 1 2 1.5
      Part No.: 900 460

      or equivalent.