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Modular surge arrester for mounting on DIN EN 60715 TH35.4 rails, 72 mm wide. This modular surge arrester reliably protects electrical installations against transient overvoltages. It protects TN and TT systems against switching overvoltages and indirect lightning strikes. Its compact design, easy DIN rail mounting, and modular construction enable quick installation and maintenance. It offers Type 2 protection and reliably protects against transient overvoltages caused by switching operations or distant lightning strikes. According to DIN VDE 0100-443/534, the use of an MUA-20 is mandatory if... For example, the cable length between the main and sub-distribution boards exceeds 10 meters. If external lightning protection is present, a protection class is required: Type 1 in the main distribution board (e.g., MUA-100, MUA-50) Type 2 in the sub-distribution board (e.g., MUA-30, MUA-20) A Type 2 arrester in the sub-distribution board is only required if the cable length to the main distribution board with installed Type 1+2+3 arresters exceeds 10 meters.
€144,79