The PL40A is a protective relays used in the Sick Safety Systems range. This device is designed to protect personnel from hazardous locations and is used in safety systems such as switchgears, control panels, motor controllers, and motion controllers. The PL40A is an advanced overload monitoring relays that utilizes current measurement, contactor control, and digital signal processing to provide reliable protection against short-circuit, overload, and locked rotor conditions. It also has three LED indicators that provide visual indication of relay status and is housed in an IP20 rated enclosure.