Description
A pressure switch has two main functions: protection and control. On the protective side, it limits refrigeration pressure by stopping the flow of refrigerant if pressures exceed a safe operating limit or if pressures drop too low, usually caused by a leak in the system.
| Model | Application | Settings Open | P.S.I. Close | Setting Open | Tolerance
Close |
| LPS0520 | Low Pressure Automatic Reset |
5 | 20 | +/-5 | +/-5 |
| LPS1020 | 10 | 20 | +/-5 | +/-5 | |
| LPS2550 | 25 | 50 | +/-5 | +/-5 | |
| LPS2580 | 25 | 80 | +/-5 | +/-5 | |
| LPS4080 | 40 | 80 | +/-5 | +/-5 | |
| HPS200150 | High Pressure Automatic Reset |
200 | 150 | +/-15 | +/-15 |
| HPS250150 | 250 | 150 | +/-15 | +/-15 | |
| HPS300200 | 300 | 200 | +/-15 | +/-15 | |
| HPS350250 | 350 | 250 | +/-15 | +/-15 | |
| HPS400200 | 400 | 200 | +1-15 | +/-15 | |
| HPS400300 | 400 | 300 | +/-15 | +/-15 | |
| HPS450250 | 450 | 250 | +/-15 | +/-15 | |
| MPS350 | High Pressure Manual Reset |
350 | — | +/-15 | +/-15 |
| MPS450 | 450 | — | +/-15 | +/-15 |



