Square D Qwikline - QO-E Mk 1 - 10a Type 3 Single Pole MCB. From the Qwikline range. Will fit all Qwikline boards along with QO, QO-X and QO-E breakers. They areNOT compatible with Loadcentre KQ and Qwikline II SQO type circuit breakers or the Domae range.
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