Technical Considerations And Operating Specifications For Upper And Lower Line Configuration Of Low Voltage Circuit Breakers
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They can be connected to the upper line (the upper end of "ON" of Lv Pole Mounted Circuit Breakers is connected to the power line, and the lower end of "OFF" is connected to the load) or the lower line (the upper end of "ON" is connected to the load, and the lower end of "OFF" is connected to the power supply).
