Multipole, modular type 2 surge arrester with integrated backup fuse and a functional design.

• Combination of arrester backup fuse and arrester element in a single device
  
• Prewired complete unit consisting of a base part and plug-in protection modules
  
• Energy coordination within the Red/Line family
  
• High discharge capacity
  
• High reliability due to "Thermodynamic Control" monitoring device
  
• Easy replacement of protection modules without tools due to module locking system with module release button

Detailed technical information DEHNguard^® M CI
Brochure PDF [540 KB]

Multipole arrester with three-stage d.c. switching device for use in PV systems

• Prewired modular complete unit for photovoltaic systems consisting of a base part and plug-in protection modules
  
• Combined disconnection and short-circuiting device with safe electrical isolation in the protection module prevents fire damage due to d.c. arcs
  
• Tried and tested fault-resistant Y-connection prevents damage to surge protective devices in case of insulation faults in the generator circuit
  
• Safe replacement of protection modules without arc formation due to integrated d.c. fuse

Detailed technical information DEHNguard^® M YPV SCI (FM)
Broschüre PDF [2.5 MB]

Coordinated, single-pole lightning current arrester in NH design, size 00, with high follow current limitation for UC = 255 V

• Low voltage protection level ≤ 2.5 kV
  
• Lightning current discharge capacity: 25 kA (10/350 µs)
  
• Maximum system availability

Detailed technical information DEHNbloc Maxi NH00 255

Modular, single-pole surge arrester with a varistor and a spark gap connected in series in the pluggable protection module

• Universal surge arrester consisting of a base part and plug-in protection module
  
• Heavy-duty zinc oxide varistor, "Thermodynamic Control" monitoring device and spark gap connected in series
  
• Energy coordination within the Red/Line family
  
• Narrow (modular) design in accordance with DIN 43880
  
• Multifunctional terminal for connecting conductors and busbars
  
• Easy replacement of protection modules without tools due to module locking system with module release button
  
• ...FM version also available with three-pole terminal set for the connection of the remote indication

Modular, single-pole surge arrester with a varistor and spark gap connected in series in the pluggable protection module

Detailed technical information DEHNguard^® S ... VA (FM)

4-pole pluggable surge arrester

For protecting the power supply of industrial electronic devices in switchgear cabinets against surges.

• Four-pole surge arrester consisting of a base element and plug-in protection module
  
• High discharge capacity due to powerful zinc-oxide- varistor/spark-gap combination
  
• Energy-coordinated within the Red/Line product family
  
• Operating state/fault indication by mark in the inspection window
  
• Allows for easy replacing of protection modules without tools due to module locking system with releasing button
  
• Nominal load current 25 A

Detailed technical information DEHNrail M 4P

Coordinated lightning current arrester for nominal voltages 400 V and 690 V

For protecting low-voltage consumer´s installations against surges, even in case of direct lightning strokes. For use in the lightning protection zones concept at boundaries 0_A – 1.

• Encapsulated non-exhausting spark gap
  
• High follow current extinguishing capability and follow current limitation due RADAX Flow technology
  
• Directly coordinated to DEHNguard surge protective devices without cable length
  
• Operating state/fault indication by mark in the inspection window

Single-pole modular coordinated lighting current arrester

For protecting low-voltage consumer´s installations against surges even in case of direct lightning strokes. For use according to the lightning protection zones concept at boundaries 0_A – 1.

• Coordinated spark-gap-based lightning current arrester, consisting of a base part and plug-in protection module
  
• Maximum system availability due to RADAX Flow follow current limitation
  
• No tripping of 32 A gL/gG fuses up to short-circuit currents of 50 kArms
  
• Discharge capacity up to 50 kA (10/350 µs)
  
• Directly coordinated with DEHNguard surge protective devices without additional cable length
  
• Low voltage protection level
  
• Operating state/fault indication by mark in the inspection window
  
• Allows for easy replacing of protection modules due to module locking system with releasing button

Detailed technical information DEHNbloc^® M

Surge protective adapter

Adapters for protecting the power supply of electronic devices against the effects of transient overvoltages as well as high-frequency interference voltages (DEHNpro 230 F Protector).

• Surge protection with monitoring device and disconnector
  
• Visual operating state indication (green) and fault indication (red)
  
• Mains filter (for DEHNpro 230 F Protector only)
  
• Maximum safety due to confusion-proof Y protection circuit