The SITOP CNX8600 6EP4437-8XB00-0CY0 is the higher-power expansion module for the PSU8600 modular power supply system, offering four individually protected outputs rated at 10A each — 40A total across the module. Where the 8-channel 2.5A variant suits distributed sensor and small actuator branches, this 4×10A module targets heavier loads: motor drives, solenoid valve banks, large remote I/O clusters, and industrial lighting.

Selective Protection and Diagnostics

Each of the four output channels is independently adjustable — voltage from 4 to 28VDC, current limit from 0.5 to 10A — with electronic overload cutoff and short-circuit protection. A 3-color LED per channel gives local go/no-go status. Via the PSU8600 base unit's PROFINET link, operators monitor real-time current per channel, set trip thresholds remotely, and selectively power down individual outputs for energy management using PROFIenergy.

System Integration

Up to four CNX8600 modules in any mix (8×2.5A and 4×10A) connect to one PSU8600 base unit through the System Clip Link — a single plug-in connector that eliminates discrete wiring for both power and communication. The module occupies 60mm of DIN rail width. Full TIA Portal integration, including SIMATIC S7 function blocks and WinCC faceplates, brings power distribution visibility into the automation engineering environment.

Key Decision Parameters

For more channels at lower current, see the 6EP4436-8XB00-0DY0 (8×2.5A). Requires a SITOP PSU8600 base unit.