SUCO
SUCO - 0342/0343 PRESSURE SWITCH 0342458601020
ATEX rated
The SUCO 0342 and 0343 are explosion-protected mechanical pressure switches certified for ATEX zones 1/2 (gas), 21/22 (dust), and mining (M2) under 2014/34/EU and IECEx. They are among the most compact ATEX-rated pressure switches available, just 52 mm tall (hex 27). The 0342 model covers adjustable ranges from 0.3 to 50 bar with 6× overpressure safety (up to ~300 bar), while the 0343 handles 50–150 bar and withstands static pressures up to 600 bar. These switches provide rugged operation up to 250 V AC and 2 A resistive loads, housed in zinc-plated steel with anodized aluminium cap, and offer a variety of seal materials (NBR, EPDM, FKM, FFKM, HNBR) and process connections (G¼, ¼ NPT) to suit different fluids and environments. Users can adjust the setpoint via an external screw, even while in service, enhancing flexibility.
Ideal for heavy-duty industrial and potentially explosive environments, such as oil & gas, petrochemical, mining, food processing, and pharmaceuticals, the 0342/0343 series ensures reliable pressure control and safety with a compact footprint. The flameproof "Ex d" enclosure contains any internal ignition and negates the need for external barriers. The diaphragm version (0342) suits low-to-mid pressures (0.3–50 bar), while the piston design (0343) is tailored for higher-pressure systems (up to 150 bar). Typical uses include hydraulic power units, compressor interlocks, pump protection, and process feedback loops in hazardous areas. With strong overpressure capacity and user-adjustable setpoints, these switches play a vital role in system safety, maintenance, and operational continuity.
- Gas protected zones 1 and 2
- Dust protection zones 21 and 22
- Mining M2
- Voltage up to 250 V
- Working area up to 150 bar
Selected variant
Technical data
| Adjustment range min | 1 bar |
|---|---|
| Adjustment range max | 10 bar |
| Pressure max | 300 bar |
| Function | Changeover (SPDT) |
| Electrical connection | Embedded 2m cable |
| IP class | IP65 |
| Approvals | ATEX, CE, IECEx |
| Material of body | Aluminium |
| Material of wetted parts | Zinc-plated steel, NBR |
| Material membrane | NBR |
| Temperature of media from | -20 °C |
| Temperature of media to | 80 °C |
| Contact load max ac | 5 A |
|---|---|
| Contact load max dc | 3.5 A |
| Voltage ac/dc max | 250 V |
| Voltage ac/dc min | 24 V |
| Deviation max | ±1,0 |
| Max switching frequency/min | 200 |
| Process connection | 1/4 BSP |
| Weight | 230 g |
| Pressure type | Relativt tryck |
| Pressure range max | 10 bar |
| Pressure range min | 1 bar |
Downloads
Product description
The SUCO 0342 and 0343 are explosion-protected mechanical pressure switches certified for ATEX zones 1/2 (gas), 21/22 (dust), and mining (M2) under 2014/34/EU and IECEx. They are among the most compact ATEX-rated pressure switches available, just 52 mm tall (hex 27). The 0342 model covers adjustable ranges from 0.3 to 50 bar with 6× overpressure safety (up to ~300 bar), while the 0343 handles 50–150 bar and withstands static pressures up to 600 bar. These switches provide rugged operation up to 250 V AC and 2 A resistive loads, housed in zinc-plated steel with anodized aluminium cap, and offer a variety of seal materials (NBR, EPDM, FKM, FFKM, HNBR) and process connections (G¼, ¼ NPT) to suit different fluids and environments. Users can adjust the setpoint via an external screw, even while in service, enhancing flexibility.
Ideal for heavy-duty industrial and potentially explosive environments, such as oil & gas, petrochemical, mining, food processing, and pharmaceuticals, the 0342/0343 series ensures reliable pressure control and safety with a compact footprint. The flameproof "Ex d" enclosure contains any internal ignition and negates the need for external barriers. The diaphragm version (0342) suits low-to-mid pressures (0.3–50 bar), while the piston design (0343) is tailored for higher-pressure systems (up to 150 bar). Typical uses include hydraulic power units, compressor interlocks, pump protection, and process feedback loops in hazardous areas. With strong overpressure capacity and user-adjustable setpoints, these switches play a vital role in system safety, maintenance, and operational continuity.
Add product as a new cart row
You already added this product. Choose whether to increase quantity on the existing row or add the product as a new row.
Related
Water & Wastewater Solutions
OEM Automatics water and wastewater application specialists have gathered all our solutions in one place. Our products are used in everything from small municipal water works to larger regional plants.
How do I know if I need a pressure switch or a pressure sensor?
When choosing between a pressure switch and a pressure sensor, the key lies in understanding your application. Our Pressure Monitoring experts breaks down the two devices for you.
Select the pressure switch for you a step by step guide
When selecting a SUCO mechanical pressure switch, it's essential to consider several key factors...
Mike Howells joins OEM Automatic - Pressure & Flow Team
OEM Automatic is pleased to welcome Mike Howells as Product Manager with the Pressure & Flow Division. With nearly 30 years of experience across the automation, process and valve industries, Mike brings a wealth of technical knowledge and product expertise to the business.
Robotics solutions
Robotics has revolutionised industry, enabling efficiency, higher production capacity and increased safety. For a robot solution to function optimally, the right components are required.
Float switches - built to perform
Whether you're looking to upgrade your current solution or secure a more robust float switch for your next project, Taurus delivers performance you can count on.
