At 415 V AC — the most common industrial distribution voltage — the C25H6TM160 delivers 70 kA Icu. At 480 V AC the rating is 65 kA Icu, and at 600 V AC it drops to 15 kA Icu. For a 160 A frame, those numbers put it in the H (high) breaking capacity class, suited for main or sub-feed breakers in high-fault panels. The trip unit is field-adjustable for the thermal pickup (Ir) and magnetic pickup (Ii) within the TM-D range, so you tune it to the downstream load without swapping the breaker. Neutral protection is set to 3D — no protection on the neutral pole — which is standard for 3-phase, 4-wire distribution where the neutral is not expected to carry fault current.
The 140 mm width and 161 mm height fit the standard ComPacT NSX cutout; depth is 86 mm. IP40 front face keeps tools and fingers out; IK07 impact rating means it survives a panel door closing on a dropped screwdriver.
Overvoltage category III suits it for fixed-installation distribution boards.