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This Siemens 5SY4140-8 is a miniature circuit breaker designed for electrical protection in industrial and mechanical engineering applications. It operates with a single pole and is rated for a maximum AC supply voltage of 400V, with an insulation voltage of 440V.
The breaker features a tripping characteristic class of D, suitable for applications requiring higher inrush currents. Its switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2. The operational current is rated at 40A at 35°C, with derating at higher temperatures.
Mechanical specifications include a width of 18mm, height of 90mm, and depth of 76mm, with a mounting depth of 70mm. It is designed for DIN rail mounting using a quick assembly system. The breaker supports conductor cross-sections from 0.75mm² to 35mm² for solid and stranded conductors.
Additional features include touch protection, sealability, and the ability to install supplementary devices. It is halogen-free and silicon-free, meeting specific environmental and safety requirements.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operational current rating is 40A at 35°C.
The rated supply voltage is 400V AC.
It features a Type D tripping characteristic.
The switching capacity is 10kA according to EN 60898.
The Siemens 5SY4140-8 has 1 pole.
The maximum conductor cross-section for solid and stranded conductors is 35 mm².
Yes, the product feature indicates it is halogen-free.