DEHN DEHNbloc Maxi CI 760 FM Type 1 Surge Arrester 4-Pole with Remote Signalling 961176

Direct lightning strikes and high-energy surges can destroy electrical installations and cause costly downtime. The DEHN DEHNbloc Maxi CI 760 FM is a coordinated Type 1 lightning current arrester that safely discharges lightning currents to protect low-voltage systems in buildings and industrial facilities.

Who is it for

Electrical engineers, panel builders, and facility managers who need reliable protection at the service entrance or main distribution board. It is suitable for TN-S and TT systems up to 760 V AC continuous operating voltage.

Main features

• Type 1 (Class I) lightning current arrester according to EN 61643-11
• High discharge capacity: 25 kA (10/350 µs) per pole, 100 kA total
• Encapsulated spark gap technology with integrated current-limiting fuse
• Remote signalling contact (FM) for status monitoring
• Compact 4-pole design, 16 TE wide, mounts on 35 mm DIN rail
• Operating temperature range: -40 °C to +80 °C

Specifications

• SPD type: Type 1 (Class I)
• Max. continuous operating voltage (U_C): 760 V AC
• Nominal voltage (U_N): 230 / 400 V AC
• Lightning impulse current (I_imp) per pole: 25 kA (10/350 µs)
• Total lightning impulse current (I_total): 100 kA (10/350 µs)
• Nominal discharge current (I_n): 25 kA (8/20 µs)
• Voltage protection level (U_p): < 4 kV
• Follow current extinguishing capability (I_fi): 100 kA rms
• Response time (t_A): < 100 ns
• Number of poles: 4
• Module width: 16 TE (4 x 4 TE)
• Mounting: 35 mm DIN rail
• Remote signalling contact: Yes (FM)
• Housing material: Thermoplastic, red, UL 94 V-0
• Degree of protection: IP20 (terminals)

Tips

Install the arrester as close as possible to the service entrance to minimise cable lengths. The remote signalling contact can be wired to a monitoring system for immediate fault indication.