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OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin

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We are proud of the high customer satisfaction and wide acceptance due to our persistent pursuit of high quality both on product and service for Normally Open Pressure Switch, Differential Pressure Sensor, Hp Lp Switch, Our company eagerly looks ahead to setting up long-term and pleasant small business partner associations with customers and businessmen from everywhere in the entire world.
OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin Detail:

Product name 4 pin high low A/C trinary pressure switch for air conditioner Refrigerant
Thread 1/8,  3/8
Common parameters HP:3.14Mpa  OFF; MP:1.52Mpa  ON; LP:0.196Mpa  OFF
Applicable medium R134a, Air conditioning refrigerant

1-china automatic air conditioning pressure switch
4-30-91
3-R134a car air conditioning pressure switch
4-30-97

Generally, pressure switches are installed in automobile air-conditioning refrigeration systems.Pressure protection switches include high pressure pressure switch, low pressure pressure switch, high and low pressure combination switch and three-state pressure switch.At present, it is commonly used as a combination pressure switch. The working principle of the three-state pressure switch is introduced below.

The pressure switch is installed on the high-pressure side of the air-conditioning system.When the refrigerant pressure is ≤0.196MPa, since the elastic force of the diaphragm, the butterfly spring and the upper spring is greater than the pressure of the refrigerant, the high and low pressure contacts are disconnected (OFF), the compressor stops, and low pressure protection is realized.

When the refrigerant pressure reaches 0.2MPa or more, this pressure is higher than the spring pressure of the switch, the spring will bend, the high and low pressure contacts are turned on (ON), and the compressor operates normally.

When the refrigerant pressure reaches 3.14MPa or more, it will be greater than the elastic force of the diaphragm and the disc spring. The disc spring reverses to disconnect the high and low pressure contacts and the compressor stops to achieve high pressure protection.

There is also a commonly used medium pressure switch.When the refrigerant pressure is greater than 1.77MPa, the pressure is greater than the elastic force of the diaphragm, the diaphragm will reverse, and the shaft will be pushed up to connect the speed conversion contact of the condenser fan (or radiator fan), and the fan will run at high speed to achieve pressure protection.When the pressure drops to 1.37MPa, the diaphragm returns to its original shape, the shaft drops, the contact is disconnected, and the condensing fan runs at a low speed.


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Product detail pictures:

OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures


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We stay with the basic principle of "quality initially, services first, steady improvement and innovation to fulfill the customers" for your management and "zero defect, zero complaints" as the quality objective. To perfect our company, we give the goods while using the good high-quality at the reasonable selling price for OEM China Compressor Cut Off Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin , The product will supply to all over the world, such as: Iceland, Kuwait, Austria, Now we have a excellent team supplying specialist service, prompt reply, timely delivery, excellent quality and best price to our customers. Satisfaction and good credit to every customer is our priority. We have been sincerely looking forward to cooperate with customers all over the world. We believe we can satisfy with you. We also warmly welcome customers to visit our company and purchase our solutions.
  • Managers are visionary, they have the idea of "mutual benefits, continuous improvement and innovation", we have a pleasant conversation and Cooperation.
    5 Stars By Jean from Melbourne - 2018.12.11 14:13
    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.
    5 Stars By Victor from Costa Rica - 2017.07.07 13:00
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