ActronAir High Pressure Switch R410A 1000L/13S protects the R410A refrigerant circuit on ESP Plus, Advance R32, and AIRES residential split ducted systems by cutting power to the compressor when condensing pressure reaches 1000 LPa -- a higher set point than R22 switches reflecting R410A's higher operating pressures. The manual reset at 13 seconds after a high-pressure trip confirms the fault has cleared before allowing compressor restart, preventing damage from operating into a sustained high-pressure condition. Isolate power and recover refrigerant before replacing any refrigerant circuit pressure switches.