PRESSURE SWITCHES
The mechanical pressure switches from Trafag are outstanding for their compact design and high-precision micro-mechanics specially developed and manufactured by Trafag itself. These switches can be installed in any position and need no electric power, making them particularly versatile in application and fully site-independent.
| TYPE (Link to data sheet) | SIGNAL OUTPUT (link to Standard Product) | SENSOR | MAIN FEATURES | RANGE | |
| … further versions see productfinder | |||||
 | PST4...4 | on-off switch | Bellows | Pressure Switch with compact block design. Ranges up to 40 bar. DIN connector & plug to IP65. High shock & vibration resistant. Fixed switching differential. Multiple marine approvals for Shipbuilding | 0…4 to 2…25bar |
 | PST4...F4 | on-off switch | Bellows | Pressure Switch with compact block design with flange connection (refer to Trafag valve blocks)allowing multiple switch installations. Fixed switching differential. DIN connector & plug to IP65. Multiple marine approvals for Shipbuilding. | 0…4 to 2…25bar |
 | PSTM...4 | on-off switch | Membrane | Pressure Switch with compact block design. DIN Connector & Plug to IP65. High shock & vibration resistant. Fixed switching differential. Multiple marine approvals for Shipbuilding. | 1.0…2.5 to 10…100bar |
| PSTM...F4 | on-off switch | Membrane | Pressure Switch with compact block design. DIN Connector & Plug to IP65. Fixed switching differential. Flanged connection (refer to Trafag valve blocks) allowing multiple switch installations. Multiple marine approvals for Shipbuilding. | 1.0…2.5 to 10…100bar |
| PSTK...4 | on-off switch | Piston | Pressure Switch with compact block design. DIN Connector & Plug. High shock & vibration resistant. Fixed switching differential. Stainless Steel wetted parts. Multiple marine approvals for shipbuilding. | 1.0…10 to 40…400bar |
| PSTK...F4 | on-off switch | Piston | Pressure Switch with compact block design. Flanged connection (refer to Trafag valve blocks)allowing multiple switch installations. Fixed switching differential. Stainless steel wetted parts. DIN Connector & Plug to IP65 Multiple marine approvals for shipbuilding. | 1.0…10 to 40…400bar |
 | PSTD | on-off switch | Bellows | Differential Pressure Switch with compact block design. DIN Connector & Plug to IP65. Fixed switching differential. Multiple marine approvals for Shipbuilding. | -1.0…6.0 to -1.0…8.0bar |
 | P | on-off-switch | Bellows | Pressure switch with bellows for low pressure ranges with high accuracy. Fixed switching differential. Epoxy coated aluminium housing to IP65. High shock & viobration resistance. Media temperature -20..+150 Celsius. Multiple marine approvals for shipbuilding. | -0.9…1.5 to 10…100bar |
 | PV | on-off-switch | Bellows | Pressure switch with bellows for low pressure ranges, with large adjustable switching differential. High shock & vibration resistance. Epoxy coated aluminium housing to IP65. Multiple marine approvals for shipbuilding. | -0.6…3.4 to 4…40bar |
 | PVF | on-off-switch | Bellows | Pressure switch bellows type for low pressure ranges, small adjustable switching differential. Epoxy coated aluminium housing to IP65. High shock & vibration resistance. Multiple marine approvals for shipbuilding. | -0.6…3.4 to 4…40bar |
 | PK | on-of-switch | Piston in Stainless Steel | Pressure Switch with stainless steel piston. For applications with pressure peaks and high overpressure. High shock & vibration resistance. Epoxy coated aluminium housing to IP65. Multiple marine approvals for ship building. | 1...10 to 60…600bar |
| EX pressure switches | |||||
 | EXP | on-off switch | Bellows in stainless steel. | Ex Pressure Switch. Fixed switching differential. Protection to IP65. To EEx ed IIC T6 (PTB 02 ATEX 1050. | -0.9...1.5 to 4.0...40.0 bar |
 | EXPK | on-off switch | Piston in Stainless Steel | Ex Pressure Switch for pressure peaks and high overpressure. Fixed switching differential. To EEx ed IIC T6 (PTB 02 ATEX 1050). | 1...40 to 60...600 bar |
| EXPD | on-off switch | Bellows in Stainless Steel | Ex Pressure Switch for differential pressure measurement. Wet/wet process. To EEx ed IIC T6 (PTB 02 ATEX 1050. Fixed switching differential. | -1...6bar -1...8bar -1...12bar -1...18bar |
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