Solid state power controller (SSPC) is a solid-state switch control unit, not a circuit breaker. thatDifferences and advantages between SSPC and circuit breakersWhat are there? Below, the editor will analyze and present them one by one.

• The functions of SSPC include the following:

• Start from the aircraft power input through the D-sub connector.

• Input coverage signal 1 from the operation panel and turn on/off the power.
  

• Input signal coverage from power supply No.2.
  

• Power outage with overload detection function
  

• High design flexibility with lifting control function and extensive functional expansion
  

• For example, the power distribution status and overall power management can be displayed on the operation panel, and remote control can be performed.
  

Advantages of SSPC

1. Size and weight

① Volume; Less than half, weighing 30% -50% of the C/B size (refer to size chart)

② There are no restrictions on the material of the casing.

③ Power and volume density; SSPC:CB=7：1*， Power and weight density; SSPC: CB=5:1 * Same unit volume, able to control and protect a larger number of circuits and single circuit capacity, reducing the probability of mechanical contact failure.

2. Reliability

① Fast overload protection, fast short circuit protection

② Minimum loss switching with controlled start and stop

3. Maintainability and flexibility

① Long life, resistant to cabinet, oxidation, corrosion, welding and other moving parts

② The impact of contact bounce and vibration on performance failure is relatively small

③ The mean time between failures (MTBF) has been greatly improved, and the system's operating rate has also been greatly enhanced

④ Hardware standardization, software modification personalization

4. Scalability

① Data bus access and network access, as well as real-time feedback of load status.

Can remotely monitor status signals (on/off)

Can monitor the status of all loads.

② High degree of freedom coverage signal

Discrete (on/off) signal control, load device switching

Communication (input from higher-level equipment)