When Operating Low-voltage Pole-mounted Circuit Breakers, A Warning Sign Prohibiting Closing Must Be Displayed.

Although Lv Pole Mounted Circuit Breakers is a standard piece of equipment, its operation could potentially lead to "reverse power supply" or "accidental power supply" risks if it affects a de-energized line. To prevent operators from misjudging the energized status or mistakenly closing the circuit breaker and energizing the line, displaying this warning sign provides a clear indication: This equipment is prohibited from being closed; personnel are currently working on the line; energizing the line again is immediately prohibited. According to relevant electrical safety regulations, if a switch, disconnector, or similar device is closed to supply power to the work area, a sign stating "Do Not Close, Personnel Working" or "Do Not Close, Personnel Working on the Line" must be displayed at its operating point.