Frame and ratings — what In=100A and Iu=160A mean for your panel
The 1SDA068124R1 is an ABB XT4N 160 molded case circuit breaker with a rated current (In) of 100 A and a frame rating (Iu) of 160 A. The In value is the continuous current the breaker is calibrated to carry without tripping; the Iu is the maximum current the XT4 frame can handle when fitted with a higher-rated trip unit. For this specific unit, the Ekip LS/I electronic trip is set for 100 A, so the breaker protects downstream conductors and loads at that level, while the frame itself has headroom up to 160 A if you ever swap the trip block. Rated voltage is 690 V AC at 50/60 Hz, covering standard 400/480 V distribution panels globally. The 3-pole configuration handles three-phase circuits — common for motor control centers, distribution boards, and feeder protection in commercial and industrial installations.
Ekip LS/I trip unit — protection curve breakdown
The Ekip LS/I is an electronic trip unit offering long-time (L), short-time (S), and instantaneous (I) protection. Long-time delay handles overloads with an adjustable thermal memory; short-time delay coordinates with downstream breakers for selective coordination; instantaneous clears hard faults within a few milliseconds. This makes the breaker suitable for both feeder and main applications where you need adjustable time-current curves, not just a fixed thermal-magnetic response.