Motor protection with adjustable magnetic trip
The ABB 1SDA068117R1 is a motor protection circuit breaker from the XT4N series, rated at 80 A continuous and featuring an adjustable magnetic trip unit with a range of 400–800 A to handle motor starting inrush. The MA trip unit (magnetic-only) eliminates nuisance tripping during startup — the core reason you spec this over a thermal-magnetic breaker for motor circuits. Frame rating Iu of 160 A gives the XT4 short-circuit withstand headroom typical of this frame class. Three-pole design at 690 V rated voltage suits standard 400 V or 690 V motor feeders. The adjustable trip range means you dial in the magnetic pick-up between 400 and 800 A, covering motors with full-load currents up to the 80 A In limit.