The 3-pole footprint takes up three module widths (about 54 mm) in the enclosure. Wire termination is via tunnel terminals — strip length and torque spec follow the standard ABB S200 series practice. No auxiliary contact or shunt trip fits internally on this base unit; those go on the left-side accessory slot if needed.
The 8 A rating with Curve C is a common selection for general-purpose branch circuit protection in distribution boards. At 277 VAC phase-to-neutral (typical for North American lighting panels), the 10 kA interrupting capacity handles most service-entrance fault levels without requiring a current-limiting upstream breaker.