The XT4S-250: The 690V AC / 500V DC rating covers most industrial panel voltages up to 600V class and common DC bus voltages. That dual rating means it can serve both AC distribution and DC load circuits in the same panel — useful for mixed-supply switchgear where a single breaker type simplifies the BOM.
Lifecycle status is current — ABB still lists this as an active catalog number. No PCN or EOL notice exists for this order code.