SENTRON 5SQ2270-0KA16 — 2-pole C-curve MCB, 16 A, 3 kA
The SENTRON 5SQ2270-0KA16 is a 2-pole miniature circuit breaker from the 5SQ T55 series, rated 16 A with a C tripping characteristic and a 3 kA breaking capacity per EN 60898 at 400 V AC, 50 Hz. The 2-pole design switches both phase and neutral, with neutral conductor switching confirmed on this variant.
The 16 A C-curve handles typical branch circuits for socket outlets, small motor loads, or lighting groups; the C characteristic gives enough magnetic-trip headroom for motor inrush without delaying on a hard short. Installation depth is 55 mm, and the unit occupies 2 width units on a DIN rail — standard 36 mm footprint for a 2-pole MCB.
Panel integration note
Snap-on DIN rail mount, 2 width units (36 mm). Overvoltage category 3 and energy limiting class 3 — typical for fixed-installation distribution boards where the breaker provides both overload and short-circuit protection downstream of the main switch.