The 5SY4416-5 is a SENTRON 4-pole miniature circuit breaker rated 16 A, 400 V AC, Type A, with breaking capacities of 10 kA, 20 kA, 15 kA (DC), and 5 kA; this is a current production part.
Mounting and integration
Mounts via the quick assembly system in any position. Occupies 4 width units (72 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). Terminals accept solid or stranded copper from 0.75 to 35 mm². IP20 with conductors connected; touch protection and sealable. Halogen-free and silicon-free — relevant for cleanroom or food-industry panels.
Rating details
Type A tripping characteristic trips on short-circuit and overload with a more sensitive magnetic threshold than Type B or C — suited for semiconductor protection or long cable runs. Rated for 50/60 Hz. Ambient temperature range -40 to +70 °C; storage -40 to +75 °C. Humidity limits to 95 % at 55 °C, tapering to 35 % at 75 °C. Overvoltage category III.
Among the 5SY4 series, this 16 A 4-pole Type A sits between higher-current and lower-current siblings. The Type A characteristic — with its lower magnetic pickup — sets it apart from the more common Type B or C variants in the same frame. For a direct drop-in check, cross-reference the rating plate: any peer with identical poles, current, trip curve, and breaking capacity will fit the same footprint, but the tripping behavior must match your load.
Sourced to order against an RFQ. Current production run; no last-time-buy schedule in evidence.