The CARLO GAVAZZI RZ3A series is a family of solid-state relays engineered for robust industrial applications. These relays are ideal for switching high-voltage loads up to 600 VACrms, offering features like zero switching, an integral snubber network, and a built-in varistor for transient protection. Constructed with three semiconductor power units soldered onto a direct copper bonded (DCB) substrate, the RZ3A relays provide enhanced reliability and load cycle capability. Available in AC or DC control versions, they also include built-in LED status indication for applied control voltage and optional over-temperature alarm. Common applications include plastic extrusion machines, thermoforming machines, and electrical ovens.