- Pressure switches for use with air compressors
- The switch ensures automatically starting and stopping of the compressor according to the preset pressure values
- Electrical contacts: normally closed, made of brass alloy with Ag-Ni surfacing
- Terminals with M4 screws and 8×8 mm pressure dice
- Oil-resistant NBR rubber membrane with textile insert
- ¼” F galvanised steel hydraulic connection
- Standard protection degree IP 44
- Max ambient temperature 55°C
- Tear resistant cable clamps
- Cover with on/off button
- Air-relief valve for 6 mm diameter pipe with with instant-closing action for model PTA three phase
APPLICATIONS: Pressure switches for air compressors with three phase motors
| PMA/12 | PTA/12 | |
| Pressure range | 3 – 12 bar | 3 – 12 bar |
| Factory settings | 6 – 8 bar | 6 – 8 bar |
| Min. differential | 1.5 bar | 1.5 bar |
| Max. differential | 5 bar | 5 bar |
| Rated current | 16 (10) A | 16 (10) A |
| Rated voltage | 250 V | 500 V |