Importance

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Abstract

The surge arrester with a replaceable overvoltage protection module in a single-pole or a multi-pole configuration, consisting of the U-shaped overvoltage protection base (5) adjusted for inserting one or three or four overvoltage protection replaceable modules (2), where the overvoltage protection replaceable module (2), featuring a visual status signaling window (17) of the thermal disconnector implemented via a visual signaling flexible strip (18), comprises C-shaped plug contacts (1) on the opposite lateral sides and a coding field (4) on one or both lateral sides, comprising of rectangular projections and/or indentations of a different profile, width and length, which slide in the complementary indentations and/or projections on one or both internal lateral sides of the overvoltage protection base (5). The overvoltage protection replaceable module (2) also comprises at least two guide pins (3) in its bottom part, whereas in the opposite positions the overvoltage protection base (5) comprises guide holes (6) and in the positions opposite to the plug contacts (1) the overvoltage protection base (5) comprises U-shaped contact sockets (7), and, at the same time, the overvoltage protection replaceable module (2) comprises a thermal disconnector located on the fixing case (11) of the overvoltage protection replaceable module (2) housing.

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First Claim