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Instantly add the DV M TT 255 FM Current & Surge Arrester and 50,000+ more product series to your store or catalog  
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DEHN Current and Surge Arrester, DV M TT 255 FM

DV M TT 255 FM Current & Surge Arrester

Brand: DEHN, Inc
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Modular combined lightning current and surge arrester for TT and TN-S systems ("3+1" circuit).
Features
  • Prewired spark-gap-based type 1 and type 2 combined lightning current and surge arrester consisting of a base part and plug-in protection modules
  • Maximum system availability due to RADAX Flow follow current limitation
  • Capable of protecting terminal equipment

Specifications

Brand

Approvals & Certifications

  • CE
  • KEMA
  • UL
  • VDE
  • VDS

Approvals & Certifications

  • SPD According to EN 61643-11 (Typical 1 + Typical 2)
  • SPD According to IEC 61643-11 (Class I + Class II)

Current

  • [Lightning Impulse Current (10/350 µs) & Nominal Discharge Current (8/20 µs)] [L-N] / [N-PE]: 25 KA / 100 KA (Specific Energy [L-N] / [N-PE] (W/R): 156.25 KJ / ohms / 2.50 MJ / ohms)
  • Follow Current Extinguishing Capability [L-N] / [N-PE]: 50 KAᵣₘₛ / 100 Aᵣₘₛ
  • Follow Current Limitation/Selectivity: No Tripping of a 20 A GL/gG Fuse up to 50 KAᵣₘₛ (Prospective)
  • Lightning Impulse Current (10/350 µs) [L1+L2+L3+N-PE]: 50 KA (Specific Energy [L1+L2+L3+N-PE] (W/R): 2.50 MJ/ohms)
  • Limitation/Extinction of Mains Follow Current: 0-100 KAᵣₘₛ (220 KAₚₑₐₖ)
  • Maximum

Electrical Connectors

  • Cross-Sectional Area (L1, L1', L2, L2', L3, L3', N, N', PE, Ground]: Min. 10 mm² Solid/Flexible
  • Cross-Sectional Area [L1', L2', L3' N', Ground]: Max.
  • Cross-Sectional Area [L1, L2, L3, N, PE]: Max.
  • Cross-Sectional Area for Remote Signalling Terminal: Max.

Electrical Contacts

  • Typical of Remote Signalling Contact: Changeover Contact

Electrical Rating

  • AC Switching Capacity: 250 V / 0.5 A
  • DC Switching Capacity: 125 V / 0.2 A
  • DC Switching Capacity: 250 V / 0.1 A
  • DC Switching Capacity: 75 V / 0.5 A

Enclosure, Body Material

  • Thermoplastic

Environmental Protection

  • IP20

Indication

  • Fault Indication / Operating State: Red/Green

Mounting

  • 1.37” (35 mm) DIN Rails According to EN 60715

Operating Temperature

  • Parallel: -40° to 80° C (-40° to 176° F)
  • Series: -40° to 60° C (-40° to 140° F)

Operating Voltages

  • Maximum

Response Time

  • ≤ 100 Nanoseconds

Voltage

  • Nominal Voltage: 230 Vac (50/60 Hz)
  • Nominal Voltage: 400 Vac (50/60 Hz)
  • Temporary Overvoltage (TOV) [L-N] - Characteristic: 440 V / 120 minutes - Withstand
  • Temporary Overvoltage (TOV) [N-PE] - Characteristic: 1,200 V / 200 milliseconds - Withstand
  • Voltage Protection Level [L-N] / [N-PE]: ≤ 1.5 kV

Documentation

Data Sheets

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