The Schneider Electric Easy9 EZ9F53316 is a 3-pole miniature circuit breaker rated 16 A with a C-curve trip characteristic, meaning it trips between 5 and 10 times rated current — standard for general-purpose distribution loads like lighting, socket outlets, and small motor circuits where inrush isn't extreme. The thermal-magnetic trip unit handles overloads (thermal bimetal) and short-circuits (magnetic coil) in one package.
Clip-on mounting to DIN rail, 54 mm wide (3 x 18 mm module pitches). Depth is 66.5 mm, height 81 mm — fits standard distribution boards with no overhang. IP20 finger-safe terminals, so it's fine inside an enclosed panel but not for wet locations.