The 4-pole configuration (4P) with neutral on the left handles three-phase plus neutral distribution, and the neutral protection setting is no protection (3D) — meaning the neutral pole tracks the phase poles but does not have its own overload element. The H breaking capacity code delivers 70 kA Icu at 415 V AC, which is the figure that governs fault-clearing capability in a 400 V panel; at 480 V AC it still holds 65 kA Icu per UL 60947-4-1, so it maintains selectivity headroom in mixed-standard installations. The thermal-magnetic trip (L for overload, I for short-circuit) means no electronic adjustment — the thermal element tracks the 63 A rating, and the magnetic pickup is fixed. This suits distribution duty where the load profile is stable and you do not need the selectivity tuning of an electronic Micrologic trip unit. The utilisation category is A, so it is not intended for motor-starting duty that requires category B breakers with delayed short-time withstand.
The device short name NSX100H indicates the frame size (100 A frame) and breaking capacity class (H = high, 70 kA at 415 V). The same frame accepts interchangeable trip units, so a panel designed around this breaker can be re-rated by swapping the TM-D for a different rating or an electronic unit — but the C10H6TM063 ships with the TM-D fixed at 63 A.
The 140 mm width, 161 mm height, and 86 mm depth fit standard ComPacT NSX panel cutouts. Connection pitch is 35 mm, and both upside and downside connections are front-facing — no rear-access bus required. IK07 impact resistance handles light mechanical shock during installation.
Overvoltage category III suits fixed-installation distribution panels.