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The CN101 timer mounts on a DIN rail or with screws and is wired in one of three ways (type A, B or C), depending on the model code. This page covers the mounting dimensions and the connection diagrams.
Disconnect the power before installation. Wiring must be done by a qualified electrician.

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Dimensions

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Connection diagrams

Timer terminals: IN (timer power), 16A (switched contact), NO (normally open), NC (normally closed), L (live), N (neutral).
The timer power (IN) connects between live (L) and neutral (N). The 16A contact switches the live line to the electrical appliance; neutral goes directly to the appliance.
Maximum load: 16A resistive, 10A inductive or 2000W lamps, at 250V AC.