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The Siemens 5SY4350-8 is a 3-pole miniature circuit breaker from the SENTRON product family. It is designed for robust performance in industrial environments, offering a rated voltage of 400V AC and a rated operational current of 50A at 35°C.
This circuit breaker features a D-curve tripping characteristic, making it suitable for applications with high inrush currents. It has a mechanical service life of 10,000 switching cycles and a breaking capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. The device is rated for overvoltage category III and degree of pollution 3.
Installation is facilitated by a quick assembly system for DIN rail mounting. The unit has a compact design with dimensions of 90mm height, 54mm width, and 76mm depth, with an installation depth of 70mm. It supports conductor cross-sections from 0.75mm² to 35mm² for solid and stranded wires, and up to 25mm² for finely stranded wires with core end processing.
Additional features include touch protection, sealability, and silicon-free construction. It is also halogen-free and properties for main switches in accordance with EN 60204-1 are met. The circuit breaker is compatible with supplementary devices.
The rated supply voltage is 400V AC for multi-phase operation and 230V AC for single-phase operation.
The dimensions are 90mm height, 54mm width, 76mm depth, with an installation depth of 70mm. It occupies 3 modular width units.
Yes, this product is halogen-free and also silicon-free.
The rated breaking capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2 for AC. For DC it is 15kA per IEC 60947-2.
It mounts on a DIN rail using a quick assembly system and can be installed in any position.
It has a D-curve tripping characteristic, designed for high inrush current applications.
Solid and stranded conductors from 0.75 mm² to 35 mm², and finely stranded conductors from 0.75 mm² to 25 mm² with core end processing. AWG range is 18 to 4.