Siemens 6ES7405-0KR02-0AA0 SIMATIC S7-400 PS405 10A DC Redundant Power Supply

The Siemens 6ES7405-0KR02-0AA0 SIMATIC S7-400 PS405 power supply accepts 24, 48 or 60 V DC input and delivers 5 V DC at 10 A to the backplane bus plus 24 V DC at up to 1 A, and it is built for redundant use alongside a second unit. Typical active power input is 95 W. It occupies two rack slots and weighs 1.2 kg.

Technical Specifications

Certifications & Standards

• CCC
• BIS

Selection Notes

Built for redundant use, the PS405 10 A pairs with a second unit so the rack stays powered if one supply fails; specify two of this model rather than one when redundancy is the goal. Its 10 A backplane-bus rating covers a mid-size module count, above the smallest PS405 in this range and below the highest-current version.

Applications

The two-slot footprint and 1.6 to 4 A input current across the 24/48/60 V DC range fit a DC-bus-fed rack carrying a moderate module count where a supply failure must not interrupt the process. The optional lithium backup battery keeps retentive memory alive through a supply interruption.