-When the switching capacitor contactor is closed, the capacitor must be discharged before charging (maximum terminal residual voltage ≤ 50V) 

-To effectively prevent short circuit current, the gG fuse must be 1.5-2 times of the rated current of the circuit.

-The switching capacitor unit and contactor shall be connected with impedance wire.

-UKC1 (D) - C: When switching capacitor contactors, three-phase single-stage or multi-stage capacitor banks can be switched. Comply with IEC60947-4941, UL and CSA standards.