DEHNventil M2 Combined Surge Arrester, Types 1+2+3

DEHNventil DV M2 TNS 255 FM

The DEHNventil DV M2 TNS 255 FM is a modular combined arrester (Type 1 + Type 2 + Type 3) for 230/400 V TN-S systems.
Designed on the basis of spark gaps, the arrester combines high-performance lightning current and surge protection with a protection level of ≤ 1.5 kV. The integrated RAC technology ensures high follow-current extinction capacity and reliable operation even with high lightning currents.
Thanks to pluggable protection modules, a visual status indicator and an integrated FM signalling contact, the DEHNventil is particularly easy to maintain and monitor. The compact 4 TE design is suitable for mounting on a 35 mm top-hat rail.

Product advantages

• Combined lightning and surge protection: Type 1 + Type 2 + Type 3
• Suitable for TN-S systems with 230/400 V
• High lightning current carrying capacity with a total discharge capacity of up to 100 kA
• Low protection level of ≤ 1.5 kV
• RAC spark-gap technology for high residual current extinction capability
• Energetically coordinated protection right through to the end device for cable runs of up to 10 m
• Pluggable protection modules for easy maintenance
• Integrated FM changeover contact for remote monitoring

Product features

• SPD class: Type 1 + Type 2 + Type 3
• Mains configuration: TN-S system
• Rated voltage: 230/400 V AC, 50/60 Hz
• Maximum continuous voltage: 255 V AC
• Total lightning surge current: 100 kA
• Rated discharge surge current: 25/100 kA
• Protection level: ≤ 1.5 kV
• Response time: ≤ 100 ns
• Short-circuit withstand capacity (ISCPV): 10 kA
• Connection cross-section: 6–35 mm² (multi-strand), up to 25 mm² (fine-strand)
• Mounting: 35 mm top-hat rail, 4 TE
• Protection class: IP20