How do you connect UVT and MCCB and PFR?

To connect a UVT (Under Voltage Trip) to an MCCB (Molded Case Circuit Breaker) and a PFR (Power Factor Relay), you typically wire the UVT's output contacts to the control circuit of the MCCB. The UVT monitors voltage levels and will trip the MCCB if the voltage drops below a preset threshold. The PFR, which monitors the power factor, can be integrated into the same control circuit to provide additional protection or automation functions. Proper coordination of settings and wiring ensures that the MCCB responds correctly to both under-voltage conditions and power factor anomalies.