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The Siemens 5SY4420-7 is a 4-pole miniature circuit breaker designed for reliable circuit protection in industrial and mechanical engineering applications.
This breaker operates with a C-trip characteristic and has a rated operational current of 20A at 35°C, with derating at higher temperatures. It offers a significant switching capacity of 10kA according to EN 60898 and up to 20kA according to IEC 60947-2, ensuring protection against overcurrents and short circuits.
With a supply voltage rating of 400V AC and an insulation voltage of 440V, the 5SY4420-7 is suitable for various power distribution systems. It features a mechanical service life of 10,000 switching cycles and is built with a robust design, including combined terminals for easy connection.
The breaker is designed for DIN rail mounting and has a compact width of 72mm, occupying 4 modular units. It is rated with an IP20 protection class when connected.
| 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 is 20A at 35°C.
The supply voltage is rated at 400V AC.
This circuit breaker has 4 poles.
The switching capacity is 10kA according to EN 60898.
The tripping characteristic class is C.
It is designed for DIN Rail mounting.