6ES7 407-0DA02-0AA0 – Siemens Power Supply Module PS407

Overview

The Siemens Power Supply Module PS407 (6ES7 407-0DA02-0AA0) is a robust industrial power supply designed for use with SIMATIC S7-400 programmable logic controller (PLC) systems. This module supports wide-range input voltages from 120-230 V AC or DC, and provides reliable outputs required to power the S7-400 backplane and associated modules. 

The PS407 offers stable DC outputs with a primary 5 V DC output rated at up to 4 A for backplane bus power and a secondary 24 V DC output for supply continuity and auxiliary modules. Its wide input range makes it suitable for diverse industrial environments where consistent power and protection-grade performance are critical. 

Industrial Power Functionality

Equipped for both AC and DC mains, the PS407 can accept:

• 120 V DC or AC

• 230 V DC or AC

  providing flexibility for use across different automation installations. The module includes built-in short-circuit and overload protection to ensure safety and reduce downtime. 

Additionally, the PS407 supports a mains buffering function that can sustain brief power interruptions, helping protect the PLC logic and memory integrity during voltage fluctuations. Optional backup batteries can be integrated for enhanced continuity. 

Industrial Applications

This power module is widely applied in industrial automation installations that rely on SIMATIC S7-400 PLC technology, including:

• Manufacturing and automated production lines

• Process control systems in utilities and factories

• Packaging machines and handling equipment

• Industrial PLC racks requiring stable 5 V and 24 V backplane power

• Energy and infrastructure automation systems 

The PS407 module’s wide voltage tolerance and rugged design make it suitable for use in demanding operational environments where power reliability directly affects system uptime and performance.

FAQ

What is the Siemens 6ES7 407-0DA02-0AA0?

It is a PS407 power supply module for Siemens SIMATIC S7-400 PLC systems that provides stable DC power to the backplane and auxiliary circuits. 

Can it operate on both AC and DC mains?

Yes — it supports AC and DC input voltages in the wide range of 120 V to 230 V. 

What are the output specifications?

It delivers up to 4 A at 5 V DC and also provides 24 V DC output. 

Is it suitable for critical industrial applications?

Yes — with built-in protections and buffering capabilities, it is ideal for industrial PLC systems requiring reliable and stable power. 

Call to Action

Request a quote or technical inquiry for the Siemens 6ES7 407-0DA02-0AA0 Power Supply Module (PS407) to confirm availability and compatibility for your S7-400 automation system.