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Telebahn 255V AC SPD T1+T2 25ka 3p+N 3 Phase Parafoudre Surge Protection Surge Protector Surge Arrester for Main Distribution. Type 1 + Type 2 Protection: Class I and Class II surge protection for TT/TN-S systems according to IEC 61643-11. Visual Fault Indication: Green window turns red upon fault, with optional remote alarm terminal. Pluggable Design: Easy replacement and maintenance with 35mm DIN rail mounting. Flame Retardant Material: Constructed with UL94-V0 rated thermoplastic for safety. OEM and ODM Support: Full customization available including samples, designs, and minor adjustments.