The main isolating switch feeds either two essential circuits and controls any other circuits via two residual current devices (RCDs), whilst a second variation offers isolator control of just the two RCD sections.

Another key feature of the Housemaster Compact spit-load consumer unit is its ability to accommodate non-standard configurations, instead of being confined to typical combinations of 4+4 or 6+6 only. It provides extra flexibility by enabling installers to achieve variations such as 3+5 or 2+6.

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