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The Siemens 5SY4540-6 is a miniature circuit breaker from the SENTRON product family, designed for reliable circuit protection in industrial and mechanical engineering applications. This 2-pole (1P+N) device operates on AC voltage with a rated supply voltage of 230V and a rated operational current of 40A at 35°C.
Key electrical specifications include a switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It features a Type B tripping characteristic, suitable for protecting circuits with lower inrush currents. The breaker has an insulation voltage of 250V and supports a DC operating voltage up to 72V.
Mechanically, the 5SY4540-6 is designed for quick assembly on a DIN rail, with a width of 36mm (2 modular units) and a depth of 76mm. It accepts solid or stranded conductors ranging from 0.75mm² to 35mm², with specific limits for finely stranded conductors. The device is also sealable and features combined terminals at the top and bottom, along with neutral conductor switching.
Environmental and compliance features include a protection class of IP20 with connected conductors, a degree of pollution of 3, and it is halogen-free. The breaker meets standards such as IEC/EN 60898-1 and IEC/EN 60947-2.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated supply voltage for the Siemens 5SY4540-6 is 230 V AC.
The operational current rating is 40 A at 35°C, and 40 A at AC rated value.
The Siemens 5SY4540-6 has 2 poles, with a design of 1P+N.
The tripping characteristic class is B.
The switching capacity current is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
It accepts solid or stranded conductors from 0.75 mm² to 35 mm², and finely stranded conductors from 0.75 mm² to 25 mm².
Yes, the Siemens 5SY4540-6 is halogen-free.