The ABB S282UC-B16 is a 2-pole B-curve 16 A 500 VDC molded case circuit breaker from the S280UC series. It's a current-production part, so no last-time-buy scramble — this one is still a standard catalog line.
B-curve is the right choice for resistive and general-purpose DC loads where you don't want nuisance trips from moderate inrush. The 500 VDC rating covers most common DC bus voltages in industrial controls (nominal 400 VDC or 480 VDC systems).