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  • Type MWB - Diaphragm Pressure Switches Stainless Steel Series, IP 65, for Low Pressure Ranges

Type MWB - Diaphragm Pressure Switches Stainless Steel Series, IP 65, for Low Pressure Ranges

Pressure monitoring and direct switching of electrical loads
For very low pressure ranges
For gaseous and liquid, aggressive and highly viscous or contaminated media, also in aggressive ambience
Process industry: chemical/petro-chemical, on- and offshore, technical gases, environmental technology, machine building and general plant construction, water treatment, pharmaceutical industry

Special Features
Case made of stainless steel, electropolished
Ingress protection IP 65, NEMA 4
Ambient temperature -40 ... +85 °C
1 or 2 independent switch points, high contact rating up to 15 A / AC 220 V
Setting ranges from 16 mbar, max. test pressure up to 10 bar


These high-quality pressure switches have been specifically developed for safety-critical applications. The high quality, and product manufacturing to ISO 9001:2000, ensures reliable monitoring of your plants. In production, the switches are traced by quality assurance software at every step and subsequently are 100% tested.
All wetted parts materials are from stainless steel as standard. Each switch family is available in IP 65, Ex-ia or Ex-d versions (Ex-d see model MAB, data sheet PV 31.13).

In order to ensure as flexible operation as possible, the pressure switches are equipped with micro switches, which make it possible to switch an electrical load of up to 15 A / AC 220 V directly. For smaller contact ratings, such as for PLC applications, argon gas filled micro switches with gold-plated contacts can be selected as an option.
By using a diaphragm measuring system, the model MWB pressure switch is extremely robust and guarantees optimal operating characteristics. For applications requiring particularly high corrosion protection, variants with PTFE or Monel wetted parts are available.