Design, integration, and production of a system for monitoring power consumption in a welding plant. The main card is capable of communicating via Ethernet to a local network, which allows the user to transmit and receive data such as power consumption, logical states of its four inputs (which can be dry contact or 24V input), as well as change the states of its relay outputs with commands. The system has a module that, along with a current sensor, transmits power consumption data via RS485 communication to the main card.