Key Benefits for Technicians Dual-coil input supports 24V or 120V applications for maximum site flexibility

effectively venting flue gases to prevent pressure switch trips

Can I use a standard steel tube instead of aluminized

moisture buildup in the housing causing corrosion

The black port (P1) is the high/positive inlet

Carrier KAALP0401PUR Pressure Switch 318973-401 Key Benefits for Technicians Dual-coilThe Carrier KAALP0401PUR is a technical grade Low Pressure Switch Kit specifically engineered for HVACR systems utilizing Puron (R 410A) refrigerant. As a critical safety control, this switch monitors suction line pressure to protect the compressor from catastrophic failure caused by refrigerant loss, restricted airflow, or a frozen evaporator coil. Designed for a wide range of Carrier, Bryant, and Payne equipment, it features a factory calibrated cut