3 Phase Air Compressor Pressure Switch Wiring Diagram

By | May 19, 2023

3 Phase Air Compressor Pressure Switch Wiring Diagram

A pressure switch is a device that is used to control the operation of an air compressor. It is typically used to turn the compressor on when the air pressure in the tank drops below a predetermined level, and to turn it off when the pressure in the tank rises above a predetermined level. Pressure switches can be either single-phase or three-phase. Single-phase pressure switches are used with single-phase air compressors, while three-phase pressure switches are used with three-phase air compressors. The wiring diagram for a three-phase air compressor pressure switch is shown below.

3 Phase Air Compressor Pressure Switch Wiring Diagram

The following is a description of the components of the wiring diagram: *

M

is the motor. *

T1

,

T2

, and

T3

are the three phases of the power supply. *

S1

is the start contact. *

S2

is the run contact. *

C

is the common contact. *

P

is the pressure switch. *

R

is the relay. *

L1

,

L2

, and

L3

are the load terminals. The operation of the pressure switch is as follows: 1. When the air pressure in the tank drops below the predetermined level, the pressure switch closes the S1 contact. 2. This closes the S1 contact, which energizes the relay. 3. The relay closes the R contact, which connects the load terminals to the power supply. 4. The air compressor starts and the air pressure in the tank rises. 5. When the air pressure in the tank rises above the predetermined level, the pressure switch opens the S1 contact. 6. This opens the S1 contact, which de-energizes the relay. 7. The relay opens the R contact, which disconnects the load terminals from the power supply. 8. The air compressor stops and the air pressure in the tank drops. The pressure switch can be used to control the operation of a variety of different loads, such as air tools, air compressors, and air dryers. ## Benefits of Using a Pressure Switch There are a number of benefits to using a pressure switch with an air compressor, including: *

Improved efficiency:

A pressure switch can help to improve the efficiency of an air compressor by turning it off when the air pressure in the tank reaches a predetermined level. This prevents the compressor from running when it is not needed, which can save energy. *

Reduced wear and tear:

A pressure switch can also help to reduce wear and tear on an air compressor by preventing it from running when it is not needed. This is because the compressor will not be running when the air pressure in the tank is low, which means that it will not be subjected to the same amount of stress. *

Increased safety:

A pressure switch can also help to increase the safety of an air compressor by preventing it from running when the air pressure in the tank is too high. This can help to prevent accidents, such as the compressor exploding. ## How to Choose a Pressure Switch When choosing a pressure switch for an air compressor, there are a number of factors to consider, including: *

The size of the air compressor:

The size of the pressure switch will need to be matched to the size of the air compressor. The pressure switch should be able to handle the maximum pressure that the air compressor can produce. *

The type of air compressor:

The type of air compressor will also affect the type of pressure switch that is needed. For example, a reciprocating air compressor will require a different type of pressure switch than a rotary screw air compressor. *

The desired operating pressure:

The desired operating pressure will also need to be considered when choosing a pressure switch. The pressure switch should be able to turn the air compressor on and off at the desired operating pressure. ## Conclusion A pressure switch is a valuable tool for controlling the operation of an air compressor. It can help


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