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March 22, 2010

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Machine interlocks – CPS4STOPXP key station

Fortress Interlocks has introduced an ATEX-certified, explosion-protected safety switch key station.

The company says the CPS4STOPXP key station is designed to release keys that can be used to control mechanical door locks that provide access to machinery and process lines operating in potentially explosive environments. Both the switch and the door locks are said to be suitable for use in zone 1 and 2 environments, and the the electrical parts are ingress-protected to IP67.

The heavy-duty key station is explosion-protected, adds Fortress, and is available with up to a maximum of five safety key adaptors. By turning the first key the machine is isolated and the other four keys are released.

These keys can be used to open a maximum of five ATEX-certified ‘DM’ mechanical door locks that give access to the safeguarded area. Restarting the machine is only possible when all keys are back in the key control station, says Fortress. This interlocking system complies with the ATEX Directive, meeting the European Hazardous Location Designation: EExd IIC T6 category II2 GD, SIRA 00ATEX 1037X. Sealed to IP67 and IEC 60529 it is protected against corrosion, water, dust and oil, concludes the company.

More information is available at

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