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This Siemens 5SY4308-8 is a miniature circuit breaker designed for electrical protection applications. It features a 3-pole configuration, a rated operational current of 8A at 35°C, and a voltage rating of 400V AC.
The circuit breaker utilizes a D-trip characteristic, suitable for industrial and mechanical engineering applications. It offers a switching capacity of 10kA according to EN 60898 and 20kA according to IEC 60947-2. The device is designed for DIN rail mounting and has a protection class of IP20 with connected conductors.
Key electrical specifications include a mechanical service life of 10,000 switching cycles and a power loss of 0.8W per pole at rated current and AC. The connectable conductor cross-section ranges from 0.75 mm² to 35 mm² for solid and stranded conductors.
Additional features include halogen-free and silicon-free construction, making it suitable for various environmental conditions. The unit is also sealable and supports installable supplementary devices.
| 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 8A at 35°C, with variations at other temperatures.
The rated supply voltage is 400V AC, with an insulation voltage of 440V.
This circuit breaker has 3 poles.
The tripping characteristic class is D.
The switching capacity is 10kA according to EN 60898 and 20kA according to IEC 60947-2.
It uses DIN rail mounting.