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The Siemens 5SY4440-7 is a 4-pole miniature circuit breaker (MCB) designed for reliable circuit protection in industrial environments. It features a tripping characteristic class C and a rated operational current of 40A at AC.
With a switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2, this MCB provides robust protection against overcurrents and short circuits. The insulation voltage is rated at 440V AC, and it operates with a supply voltage of 400V AC at 50/60 Hz. The device is suitable for mechanical engineering and industrial applications.
Designed for DIN rail mounting, the 5SY4440-7 has a width of 72mm, corresponding to 4 modular units. It supports conductor cross-sections from 0.75 mm² to 35 mm² for solid and stranded wires, and up to 25 mm² for finely stranded wires with core end processing. The breaker is also halogen-free and silicon-free, contributing to environmental safety.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated operational current at AC is 40 A.
The rated supply voltage at AC is 400 V, and the insulation voltage (Ui) is 440 V.
The switching capacity current is 10 kA according to EN 60898 and 15 kA according to IEC 60947-2.
This circuit breaker has 4 poles.
It uses DIN rail mounting.
Yes, the product is halogen-free.