The 229-1-1REC4-28012-1 is part of the Sensata line of contactors and motor protection products. This particular part is a solid-state relay. It is used to control motors and other loads from an external control device such as a control switch, PLC, or DCS system. It has a wide range of features, including high switching frequency, dynamic current protection, fast response time, and a built-in heatsink for thermal protection. It is UL recognized, C-UL listed, and meets RoHS, CE, and CCC requirements.