The ABB 1SDA068119R1 is a 3-pole motor protection circuit breaker in the XT4 frame, rated In=125 A with an adjustable magnetic-only (MA) trip unit set for Im=625...1160 A, making it suited for protecting motors where thermal overload is handled separately by an external relay or overload block. The Iu=160 A frame provides continuous ampacity headroom above the In setting, which is typical for motor feeder applications where the breaker remains closed during start and clears only on short-circuit or ground-fault conditions.
Current-sibling comparison: 1SDA068121R1
For a panel originally specified around the 1SDA068119R1 (In=125 A), the 1SDA068121R1 will bolt into the same mounting holes and accept the same terminations, but the trip setting range and wire ampacity must be verified to match the motor FLA and available fault current.
Mounting and integration notes
The XT4 fixed-front, 3-pole format fits standard ABB XT-series panel cutouts and DIN-rail adapters. Dimensions match the higher-current 1SDA068121R1, so a field upgrade or de-rate swap requires no enclosure rework, only a coordination check.