It protects a 1P+N final subcircuit at 230/240 V, 50 Hz, with a rated current of 16 A at 30 °C ambient and a Type C tripping characteristic (5–10× In for short-circuit and overload). The breaking capacity is 4.5 kA per EN 60898 and 15 kA per IEC 60947-2, giving it headroom for industrial panel coordination where the prospective fault current may exceed domestic levels.
The 16 A rating at 30 °C is the headline figure, but the derating curve is what governs real-world panel placement. At 40 °C the continuous rating drops to 15.2 A; at 50 °C it is 14.4 A; at 60 °C it is 13.6 A; and at 70 °C it is 12.32 A. The Type C characteristic means the magnetic trip fires between 5 and 10 times the rated current (80–160 A for this 16 A unit). For purely resistive loads or long cable runs, Type B is a better selectivity match; for heavy motor starts, Type D may be needed. The 4.5 kA rating per EN 60898 covers the standard domestic/commercial fault level; the 15 kA per IEC 60947-2 matches industrial distribution boards with higher prospective short-circuit current. The energy limitation class is 3, meaning the device limits let-through energy to a low level, protecting downstream wiring and connected equipment.
The 5SU1353-7KK16 snaps onto a 35 mm DIN rail per EN 60715, occupying 2 modular width units (36 mm). Installation depth is 70 mm; total depth including the housing is 77 mm.