The 3RA2922-2H with Interface module is a Siemens electrical and control system component. It is a two-phase electronic protection relay designed to protect circuits from short-circuit, overload, and phase unbalance. The module consists of two components: a measuring transducer with two independent thermal elements to measure real time current, voltage, power, frequency, and other parameters; and a protective relay with several protection functions such as undervoltage, overload, and short-circuit protection. The relay also includes a communication interface to connect with other systems and devices in the cab control system. The module can be used to monitor power systems, offer programmable logic, and control cab switchgear under various operating conditions.