Three-position load switches I-0-II of the e.is3.pro 125A series are designed for manual switching of consumers from the main to the backup power supply.

The switch has three handle positions:

• Down position — the load is powered from the first input;
• Middle position — the load is switched off;
• Up position — the load is powered from the second input.

The switching is performed through the zero (middle) position, which makes it impossible to make electrical contact between the main and backup power supplies.

Note: The switch must be operated without load!

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