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This Siemens 5SY4440-5 is a 4-pole miniature circuit breaker designed for reliable circuit protection in industrial and mechanical engineering applications. It features a tripping characteristic class A and a rated operational current of 40A at 35°C, with derating at higher temperatures.
The breaker has a high switching capacity current of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It is rated for a supply voltage of 400V AC and offers an insulation voltage of 440V AC. The unit is designed for DIN rail mounting with a quick assembly system and supports a wide range of conductor cross-sections from 0.75 mm² to 35 mm².
Additional features include combined terminals at the top and bottom, sealability, and halogen-free construction. The mechanical service life is typically 10,000 switching cycles. The protection class is IP20 with connected conductors.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The Siemens 5SY4440-5 has a supply voltage rating of 480V AC.
The current rating is 40A.
It has a mechanical service life of 10,000 switching cycles.
It complies with IEC / EN 60898-1, IEC / EN 60947-2, and UL 1077.
The breaking capacity is 15 kA according to IEC 60947-2.
It mounts on a DIN rail.
Yes, it is halogen-free.