While there are many slim relays on the market, not all of them feature such robustness on the inside. Phoenix Contact’s PLC relays have many engrained features that stand out from similar products. The Lead-frame construction allows for signals to travel through the base in a way that also dissipates heat effectively, this avoids hot-spots in the relay base. These relays come with “built-in” protection from inductive kickback (freewheeling diode) and improper wiring (polarity protection). LED status indication lets one easily tell if the relay is in the active state or not. Integrated marking channels allow users to mark their relay for organizational purposes. Laser-printed terminals help avoid wiring mistakes. The integrated bridging channel paired with the uniform shape of PLC relays make the bridging capabilities of these relays unique.