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DEHNbloc Maxi

  • Encapsulated RADAX Flow spark gap with high follow current limitation
  • No tripping of 32 A gG fuses up to short-circuit currents of 50 kArms
  • High lightning current discharge capacity
  • Directly coordinated with DEHNguard ... and V(A) NH ... surge protective devices without additional cable length
  • NH00 design
  • Low voltage protection level

Details

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DEHNbloc Maxi NH00 255

Coordinated single-pole lightning current arrester in NH00 design for TN-C and TN-S systems with a nominal voltage of 230 / 400 V.

1 Product

Part No. 900255 DBM NH00 255

GTIN 4013364125773, Customs tariff No. (EU): 85363090, Gross weight: 208.00 g, PU: 1.00 pc(s)

Predecessor

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Additional information

Coordinated DEHNbloc Maxi NH00 255 lightning current arrester
Coordinated single-pole lightning current arrester
in NH 00 design with high follow current limitation
Type 1 SPD according to EN 61643-11
RADAX Flow spark gap technology
for follow current limitation
Max. continuous operating voltage: 255 V a.c.
Voltage protection level: <= 2.5 kV
Lightning impulse current (10/350): 25 kA
Follow current extinguishing capability: up to 100 kArms
Energy-coordinated with arresters of the
Red/Line series according to IEC 62305-4

Brand: DEHN
Type: DBM NH00 255
Part No.: 900255
or equivalent.

Certificates

 

Wave breaker function

In the case of spark-gap-based type 1 arresters, the entire current flows through the type 1 arrester during the discharge process. Like a wave breaker, the incoming energy is greatly broken down, which significantly relieves the downstream SPDs. All type 1 arresters in the Red/Line product range feature the WBF wave breaker function.

Technical data

SPD according to EN 61643-11 / IEC 61643-11 type 1 / class I
Max. continuous operating voltage (a.c.) (UC ) 255 V (50 / 60 Hz)
Lightning impulse current (10/350 µs) (Iimp ) 25 kA
Voltage protection level (UP ) ≤ 2.5 kV
Max. backup fuse (L) up to IK = 50 kArms 315 A gG

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