Motor protection

Reliable motor protection for hazardous areas
R. STAHL offers various components that have been specially designed for protecting motors in Ex Zones 1 and 2. They are built into Ex e enclosures, and are easy to install, robust, and corrosion-resistant. It goes without saying that, when it comes to switching operations, they offer 100% reliability.

R. STAHL offers many components with different functions for protecting motors. They are installed in enclosures with the Ex e type of protection and are available as moulded case circuit breakers for motor protection, as motor protection circuit breakers, thermistor motor protection relays, as a combination of contactor and motor protection relay (max. 4, 7.5 or 11 kW at 400 V) and as a contactor (max. 4 W at 400 V) with thermistor motor protection relay. All motor protection components have a corrosion-resistant enclosure and easily accessible connection terminals to make installation easier and allow for safe connection. They are reliably secured using screws in the enclosure to ensure that they are protected against vibrations.

  • Used for motor protection as a moulded case circuit breaker or motor protection relay, also as a thermistor motor protection relay or combined with a contactor
  • Easily accessible terminals for a safe connection and simple installation
  • Screw fastening protected against vibrations

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Certificates
Zone
Product Description
Rated operational voltage AC
DC rated operational voltage
Frequency
Rated operational current
Current-setting range
Auxiliary contacts
1st auxiliary function
2nd auxiliary function
3rd auxiliary function
Min. ambient temperature
Max. ambient temperature
Subsitution for material