Disconnect switch components are essential elements in a switching power supply circuit, providing protection and efficiency for a variety of electronic systems. These circuits typically include components such as fuses, thermistors, mutual inductance filters, bridge rectifiers, filter capacitors, switching oscillation ICs, and switching transformers.

Key components like the thermistor, placed after the fuse, help limit current surges, while mutual inductance filters—constructed with symmetrically wound coil groups—eliminate interference pulses from external circuits and prevent internal pulse signals from radiating interference to the power grid. These features make disconnect switch components integral to stable and efficient power management.