Siemens 3RF2990-0GA13 Heating Current Monitoring is an extended load monitoring module for heating circuits, capable of monitoring currents up to 90 A at 40 °C. It supports line voltages from 110 to 230 V and uses a 24 V AC/DC control supply for interface with Siemens semiconductor relays or contactors. Designed for use with Siemens equipment, this unit is part of the SIRIUS 3RF29xx family of extended load monitoring products. In heating applications, it provides precise monitoring of the heating current to enable protective control and safe operation of the circuit.
