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2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin

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2021 Good Quality Car Ac Pressure 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.


4-30-913


4-30-912


4-30-914


4-30-915


car ac pressure switch


4-30-916


Product detail pictures:

2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures

2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin detail pictures


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We now have our own gross sales team, style and design workforce, technical crew, QC workforce and package group. We now have strict quality manage procedures for each system. Also, all of our workers are experienced in printing industry for 2021 Good Quality Car Ac Pressure Switch - Auto Air Conditioning Refrigeration Pressure Switch – Anxin , The product will supply to all over the world, such as: Japan, Milan, Cape Town, We are trying our best to make more customers happy and satisfied. we sincerely hope to establish a good long-term business relationship with your esteemed company thought this opportunity,based on equal, mutual beneficial and win win business from now till the future.
  • The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Roxanne from Jamaica - 2018.09.23 18:44
    This company has a lot of ready-made options to choose and also could custom new program according to our demand, which is very nice to meet our needs.
    5 Stars By May from Nepal - 2018.06.12 16:22
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