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  1. D

    Problems with Siemens MCBs

    Why when there is a short-circuit or overload current the MCB will trip (works) but sometimes the handle (toggle switch) won't came down ? This happens with many of my Siemens MCBs. Anyone has the same experienced ? Thanks.
  2. D

    MCBs for residential

    I have read Merlin-Gerin catalogue, their recommendation MCBs for residential use are : In UK : single-pole, 6kA (60898), B Curve In Australia : single-pole, 4.5kA (60898), C Curve In Singapore : dual-poles, 6kA (60898), C Curve Despite the different setup for different country, does anyone...
  3. D

    Discrimination for single-phase residential

    Hi all, How to make partial or total discrimination for residential use ? I mean how to coordinate the circuit-breakers such a downstream fault (e.g. short-circuit), ONLY the circuit-breakers placed immediately upstream (D2) of the fault will trip. The main / incomer circuit-breaker (D1)...
  4. D

    Hi All

    I'm from Indonesia. Nice to know u all. Wish u all the best........ ; \
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