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WSP300 Intelligent Segment Protector for Foundation™ fieldbus, Profibus-PA

The WSP300 offers spur protection against short circuits (between + and – terminals), limiting the short circuit current in each spur. During a short circuit situation there is no effect in the other spur or the main trunk. There is a LED to indicate short circuits and WSP300 has an integrated bus terminator in the models F and P.

In normal operation, each short circuit protector consumes less than 3 mA. After removing the short circuit, the spur goes back to normal operation, the protection circuit is disabled and the LED is dimmed.

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JB400 Intelligent Junction Box for FOUNDATION fieldbus, Profibus-PA

The JB400 offers spur protection against short circuits (between + and – terminals), limiting the short circuit current in each spur. During a short circuit situation there is no effect in the other spur or the main trunk. There is a LED to indicate short circuits and JB400 has an integrated bus terminator in the models F and P.
 
In normal operation, each short circuit protector consumes less than 3 mA. After removing the short circuit, the spur goes back to normal operation, the protection circuit is disabled and the LED is dimmed.

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JM400 Junction Box for Fieldbus, HART, (4-20mA)

JM400 is junction box, specially designed to make easier fieldbus connections (FOUNDATION fieldbus, PROFIBUS), HART and conventional instrumentation 4-20 mA. The IP66/68W housing protection, combined with appropriate cable glands, protects the wire connections from dust, water, oil, and moisture. It may be used indoors or outdoors and can withstand the most severe environments.

The JM400 design allows an easy access to the terminals, without using special tools. The terminals are twin type at the four ends. They can be used as the input and output of the bus according to the application convenience, keeping apart the wires that should be disconnected in case of device maintenance. This arrangement makes possible the disconnection of devices without disrupting the continuity of the whole segment.

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