Siemens 7SR2203-2AA11-0DA0/DD

The Siemens 7SR2203-2AA11-0DA0/DD is part of the ARGUS-M series and serves as a directional overcurrent relay case designed for protection and control applications. This unit, sized E8, supports up to five current transformers (CTs) and four voltage transformers (VTs), providing versatile measurement capabilities. It features 16 LEDs for clear status indication along with 13 binary inputs and 14 binary outputs to facilitate extensive signaling and control options. The relay accepts measuring inputs of 1/5 A for current and 63.5/110 V for voltage at 50/60 Hz frequency. Connectivity is enhanced through a USB port on the front and an RS485 interface on the rear, compatible with the IEC 60870-5-103 communication standard. This Siemens relay case is available through BSP Automation, offering reliable solutions for industrial protection schemes.