The ABB 1SDA068127R1 is a current-production XT4N distribution circuit breaker with a 40A Ekip I electronic trip unit, rated for 690V at 50/60 Hz. The lifecycle stage is current, meaning you're not chasing a last-time-buy deadline – it's a standard sourcing line. The 160A frame (Iu) is the breaker's base rating; the 40A In is the trip unit setting. This combination gives you a 160A frame with a 40A protection threshold – headroom if you ever need to uprate the trip unit. The Ekip I electronic trip unit provides adjustable protection curves, unlike a fixed thermal-magnetic. Useful for coordination with downstream loads and for matching site-specific arming curves.
Mounting and fit
Used in distribution panels for load protection up to 690V. The 40A trip in a 160A frame allows future uprating without swapping the entire breaker.