ABB AC 800M CI870K01 Ethernet/IP Communication Interface

Power Supplies — The Most Overlooked Failure Point

In any modular automation system, the power supply is the single component that can take down an entire rack when it fails. Unlike an I/O module failure — which typically affects only the channels on that module — a power supply failure is a rack-level event. Every module in that chassis goes dark. Every loop goes to its fail-safe state. Production stops.

The ABB CI870K01 is the power supply for your ABB rack. When it works, nobody thinks about it. When it fails — usually at the worst possible time — it becomes the most important component in the plant. We recommend keeping at least one spare power supply per rack, especially for systems running 24/7 in environments with temperature swings or questionable incoming power quality. Electrolytic capacitors — the most common failure mode in switch-mode power supplies — have a finite lifespan that shortens dramatically with elevated operating temperature.

Our ABB CI870K01 units are factory-sealed and tested: powered up on a live chassis, all output rails verified under load, 48-hour burn-in at 55°C, ripple and noise measured. Printed test report included. 12-month warranty. Ships within 24 hours.