The Siemens 6EP4436-8XB00-0CY0 is a SITOP CNX8600 output expansion module for the PSU8600 modular power supply system. It does not convert AC to DC — instead, it distributes and protects DC power from a PSU8600 base unit across four independently monitored 24 V / 5 A channels, each with electronic overcurrent protection.

How the PSU8600 Modular System Works

• A PSU8600 base unit (sold separately) provides the AC-DC conversion and a main 24 V DC output
• CNX8600 expansion modules like this one add extra output channels from the same DC bus
• Each of the 4 channels is electronically protected — a short on one channel trips only that channel, not the entire system
• Individual channel monitoring enables selective diagnostics and remote switching via the PSU8600 communication interface

Technical Specifications

Application

The PSU8600 + CNX8600 system replaces multiple separate power supplies and circuit breakers in large control panels where different machine sections require individually protected 24 V branches. Instead of wiring a separate power supply and MCB for each section, a single PSU8600 with CNX8600 modules provides centralized DC power with distributed electronic protection — reducing wiring, panel space, and troubleshooting time.