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Plastic Cover Pneumatic Pressure Switch , Air Compressor On Off Switch
Introduction:
1, P series pressure control can protect compressors in refrigeration and air-condition plant, and keep them from over-low pressure or over-high suction pressure.
2, P series pressure controls can start and stop refrigeration compressors and fans of air condensers.
3, P series pressure controls can be used not only in fluoride refrigeration, but also in air and liquid.
4, P series pressure controls are fitted with 3 kinds of changeover switch: a single pole double throw (SPDT), a double pole single throw(DPST) and a double pole double throw(DPDT). The position of the switch is determined by the pressure control setting and the pressure at the connector.
Technical Data:
| Ambient temperature | -20 ~ 50°C |
| Medium temperature | -25 ~ 120°C |
| Cable connection | The cable entry can be used for 15mm dia. |
| Max. working pressure | |
| L.P | 1 MPa |
| H.P | 3 Mpa |
| Max. test pressure | |
| L.P | 1.65 MPa |
| H.P | 3.3 MPa |
R410a Technical Data:
| Ambient Temperature | -40 ~ 65℃ |
| Medium Temperature | -40 ~ 120℃ |
| Diameter of connection wire hole | 15mm |
| Max. working pressure | L.P.: 1.2MPa H.P.: 4.5MPa |
| Max. testing pressure | L.P.: 2.5MPa H.P.: 4.8MPa |
Electrical data:
Connection type:
Type and Data (Unit: MPa)
| Symbol | Model | Low pressure | High pressure | Reset | Max. work presure | ||||
| Adjust range | Differential | Adjust range | Differential | L.P. | H.P. | L.P. | H.P. | ||
| Low Pressure | P2 | 0-0.2 | 0.04-0.1 | AUTO | 1.7 | ||||
| Low Pressure | P3 | -0.05-0.3 | 0.1-0.2 | AUTO | 1.7 | ||||
| Low Pressure | P6M | -0.05-0.6 | ≤0.2 | Manual | 1.7 | ||||
| Low Pressure | P6 | -0.05-0.6 | 0.1-0.4 | AUTO | 1.7 | ||||
| Low Pressure | P10 | 0.1-1.0 | 0.1-0.3 | AUTO | 1.7 | ||||
| Low Pressure | P12L | 0.2-1.2 | 0.1-0.5 | AUTO | 2.5 | ||||
| High Pressure | P12D | 0.2-1.2 | 0.1-0.4 | AUTO | 3.3 | ||||
| High Pressure | P16D | 0.3-1.7 | 0.2-0.5 | AUTO | 3.3 | ||||
| High Pressure | P20D | 0.4-2.0 | 0.2-0.5 | AUTO | 3.3 | ||||
| High Pressure | P30D | 0.5-3.0 | 0.5-1.0 | AUTO | 3.3 | ||||
| High Pressure | P30 | 1.0-3.0 | ≤0.4 | AUTO | 3.3 | ||||
| High Pressure | P30M | 0.5-3.0 | ≤0.4 | Manual | 3.3 | ||||
| High Pressure | P45L | 1.0-4.5 | ≤0.4 | AUTO | 4.8 | ||||
| High Pressure | P45DL | 1.0-4.5 | 0.5-1.5 | AUTO | 4.8 | ||||
| Dual Pressure | P830 | -0.05-0.6 | 0.1-0.4 | 0.5-3.0 | ≤0.4 | AUTO | AUTO | 1.7 | 3.3 |
| P830HM | -0.05-0.6 | 0.1-0.4 | 0.5-3.0 | ≤0.4 | AUTO | AUTO | 1.7 | 3.3 | |
| P830HLM | -0.05-0.6 | ≤0.4 | 0.5-3.0 | ≤0.4 | Manual | Manual | 1.7 | 3.3 | |
| P1245L | 0.2-1.2 | 0.1-0.5 | 1.0-4.5 | ≤0.6 | AUTO | AUTO | 2.5 | 4.8 | |
| P1245LHM | 0.2-1.2 | 0.1-0.5 | 1.0-4.5 | ≤0.6 | AUTO | Manual | 2.5 | 4.8 | |
| P1245LHLM | 0.2-1.2 | ≤0.2 | 1.0-4.5 | ≤0.6 | Manual | Manual | 2.5 | 4.8 | |
Mounting Plate (Unit: mm):
Dimensions(unit: mm):
Single pressure:
| Symbol | A | B | C |
| Low pressure | 34.4 | 36 | 22.4 |
| High pressure | 22 | 32.7 | 18.5 |
Dual pressure: