Siemens 6ES7407-0KR02-0AA0 is a PS407 power-supply module for the SIMATIC S7-400 PLC system, delivering 5 V DC at up to 10 A to the controller backplane and connected modules. It accepts a wide input range of 85–264 VAC or 88–300 VDC and is designated for redundant use (PS407 10 A R), enabling paired modules for high-availability configurations. This exact variant, 6ES7407-0KR02-0AA0, is the 10 A redundant version used to ensure continuous operation in industrial automation cabinets.
