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Explosion-protected Pressure Switches

Explosion-protected Pressure Switches

Explosion-protected Pressure Switches

Product catalog summary
Explosion-Protected Pressure Switches Overview
These pressure switches are designed to meet ATEX standards for use in potentially explosive environments. They are suitable for zones 1, 2, and 22, with specific models available for gases, vapours, and dusts. The switches are not suitable for methane dust applications.

Technical Specifications
  • Contact Rating: Max. 1 A / 250 VAC, 0.25 A / 250 VDC, 2 A / 250 VAC
  • Temperature Range: NBR and EPDM: -20°C to +80°C, FKM: -5°C to +80°C
  • Switching Frequency: 200/min
  • Mechanical Life Expectancy: 1 million cycles
  • Pressure Rise Rate: ≤ 1 bar/ms
  • Hysteresis: 10-30% (non-adjustable)
  • Vibration Resistance: 10 g / 5-200 Hz
  • Shock Resistance: 294 m/s²; 14 ms
  • Degree of Protection: IP65
  • Body Material: Aluminium, zinc-plated steel, anodised aluminium

ATEX Certification and Safety
The switches are ATEX-certified and bear the CE mark, ensuring compliance with the Explosive Safety Directive 94/9/EC. Users must ensure compatibility with specific environmental conditions and adhere to safety regulations, especially when using oxygen.

Product Variants and Applications
  • Diaphragm Pressure Switches: Suitable for hydraulic/machine oil, heating oil, air, nitrogen, etc.
  • Piston Pressure Switches: Limited suitability for gases; suitable for hydraulic fluids and petrol/gasoline.

Ordering Information
Pressure switches are available with factory pre-set switching points. Detailed order numbers and adjustment ranges are provided for different models, with specific tolerances and thread types.

Additional Notes
Dynamic pressures should be 30-50% lower than static pressure ratings. The document provides detailed technical data and safety guidelines for proper usage and compliance.
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Catalog excerpts

Explosion-protected Pressure Switches-1

Explosion-protected pressure switches w w w.suco.de To ATEX standard RoHS compliant Technical data ATEX-certified for use in potentially explosive areas. Changeover switch for reliable operation. 0165 ATEX protection zone: Contact rating: 0340 0341 1 and 2 22 22 max. 1 A / 250 VAC max. 0.25 A / 250 VDC max. 2 A / 250 VAC Temperature range: Switching point can be easily adjusted by the user while in operation. NBR: -20 °C – +80 °C EPDM: -20 °C – +80 °C FKM: -5 °C – +80 °C Switching frequency: 200 / min. Mechanical life expectancy:  10 6 cycles Compact design. Pressure rise rate: ≤ 1 bar/ms Outstanding price / performance ratio. Hysteresis: 10 – 30 % (depending on type, non-adjustable) Vibration resistance: 10 g / 5 – 200 Hz sine-wave 294 m/s2; 14 ms half-sine-wave Shock resistance: Cable length: Conductor cross-section: Body material: standard length 2 m with wire end sleeves, also available with lengthes up to 5 m 3 x 0.75 mm2 3 x 0.5 mm2 aluminium zinc-plated steel (CrVl-free) anodised aluminium Degree of protection: Weight in grams: 46 IP65 approx. 380 g approx. 230 g approx. 230 g

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Explosion-protected Pressure Switches-2

Technical data w w w.suco.de RoHS compliant Technical explanations Explosion-protected pressure switches are classified by ATEX and approved according to the type of combustible material that may be expected where they are to be used. The sub-divisions are: Gases and Vapours Dusts Methane dust Our pressure switches are suitable for gases and vapours, or for dust according to the type chosen. They are not suitable for use in methane dust (mining applications). The table provides an overview of the sub-division into zones, equipment groups and equipment categories. Conditions in locations with...

 Open the catalog to page 2
Explosion-protected Pressure Switches-3

0165 w w w.suco.de Diaphragm / piston pressure switches 250 V ATEX 0102 RoHS compliant II 2G Ex d II C T6 / T5 X (gas-protected zone 1 and 2) Aluminium body With changeover switch Max. voltage 250 V Overpressure safe up to 200 / 600 bar1) With female thread pmax. in bar ~2000 Adjustment range in bar Tolerance at room temperature Thread Order number: 0165 Diaphragm pressure switches PG 9 200 1) 1–6 ± 0.5 5 – 50 ± 3.0 G 1⁄4 female 0165 4 4 8 14 X 0 01 0165 4 49 14 X 0 01 0165 450 14 X 0 01 0165 451 14 X 0 01 0165 Piston pressure switches ~127 6001) 20 – 100 ± 3.0 – 5.0 100 – 400 ± 5.0 – 9.0 G 1⁄4...

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Explosion-protected Pressure Switches-4

0340/0341 Diaphragm / piston pressure switches 250 V ATEX w w w.suco.de RoHS compliant II 3D IP65 T90°C (dust-protected zone 22) Zinc-plated steel body (CrVI-free), protective cover anodised aluminium With changeover switch Max. voltage 250 V, protection class 2, protective insulation Overpressure safe up to 300 / 600 bar1) With male thread pmax. in bar Adjustment range in bar Tolerance at room temperature Thread Order number: Ø 28.5 0340 Diaphragm pressure switches 0.3 – 1.5 3001) 1 – 10 ± 0.2 ± 0.5 – 1.0 10 – 20 ± 1.0 20 – 50 03 4 0 ± 2.0 X 0 03 03 4 0 458 03 X 03 4 0 459 03 X 009 4 61 03 X...

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