Arnocanali SS442TT - ENERPRO T2 surge arrester for TT-TN networks

Arnocanali SS442TT - ENERPRO T2 surge arrester for TT-TN networks

Protection class T2 for TT-TN networks

Surge arrester, to be installed in secondary low voltage distribution switchboards, to prevent the effects deriving from atmospheric phenomena.

Poles: 1(L-N)+1(N-PE)
Occupied modules: 2
Dimensions in mm: 90x67x36
Reference standards: EN 61643-11 | IEC 61643-11 | UL 1449 ed.4
Replacement cartridge: SS440

Technical data
Networks: 230/400V
Maximum continuous AC voltage: 255V
Rated discharge current (8/20 μs): 20 kA (per pole)
Maximum discharge current (8/20 μs): 40 kA (per pole)
Voltage protection level: 1.25 kV
Residual current: <1mA
Follow Current: None
Short circuit with maximum protection: 25 kA
Protection fuse: 50AgG
TOV voltage 120 minutes (L/N): 440 Vac
TOV voltage 5 seconds (N/PE): 335 Vac
Degree of protection: IP20
Operating temperature: -40°C +85°C
Mounting on metal rail: DIN 35 (EN60715)
Min/max connection sections: 2.5 - 25 mm
Fault Indicator: Green/Red
Enclosure material (thermoplastic): UL 94V0
Tightening torque: According to the assembly instructions

Replacement cartridges (if red light)
Arnocanali SS440.TT - Neutral and earth protection
Arnocanali SS440 - Phase Protection

Advise:
In the event of a failure, a replacement cartridge often costs as much, or slightly less, than an entire SPD. Consider changing the entire piece