Secondary Disconnects (stabs) The secondary disconnects bring power from the control circuits into the circuit breaker. Photo 4 shows an LVPCB and its secondary disconnects. The typical arrangement ...

Modern versions of the photoelectric control have pulsed infrared transmitters and solid-state photo-detector receivers. They work on the principle of beam interruption to sense motion and then ...

Markets are fundamentally human, and therefore fueled by human emotions, including anxiety and fear. When such emotions get excessive, market-wide circuit breakers can come into play. These ...