Weidmuller electronic power solid state relays

The Weidmuller electronic power solid state relays (PSSRs) deliver an unrestricted service life because they are wear free. The units have no mechanical contacts which can be worn away by arcs and sparks, ensuring their longevity. They are also highly shock and vibration resistant. Silent, they cause no disturbances and deliver good performance.

The single-phase models offer fast response times, and are far quicker than a mechanical switch. They also feature a large switching capacity - from 24 to 510 VAC - and also monitor high AC loads.

The optional, plug-on monitoring module warns users when current drops by 16% or more. It detects short circuits, line breaks and defective loads to help deliver peace of mind. The PSSR variant with a 35 A load current features a high l2 t load-current characteristic of 6000 A2s and can be used for inexpensive line protection with standard circuit breakers.

Further, the 70 A phase control unit with a 4-20 mA analog input allows users to set up heating controls or the power control of single-phase motors.

Robust and easy to use, the modules are available both with and without a heat sink and can be installed directly where needed at the site of application.

With a choice of eight devices customised to meet requirements, the units are suitable for use in the process industry, as well as in machine and plant manufacturing. The units can be used in trace heating, phase-fired controllers for motors, infrared heaters and permanent current monitoring.