The modular system of pluggable relay or solid-state relay interfaces. The rail-mountable, direction-coded basic termination blocks form a terminal strip and simultaneously act as the basis for the active interface connectors in a relay and solid-state relay design.


Fitting onto DIN rail for 2, 3, 4, and 7-position relay or optocoupler connectors Different connection technologes such as screw, spring-cage or quick connection technology are available.
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The relay connectors ST-REL form the active part of the ST series and round it off to create a practical interface.
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The Phoenix solid-state relays of the ST series provide a wide range in order to directly switch actuators such as contactors, solenoid valves or motors with small capacities of output modules.
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