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This Siemens 5SY4308-7 is a miniature circuit breaker (MCB) designed for reliable circuit protection. It operates with a 400V AC supply voltage and has a rated current of 8A at 35°C, with derated values at higher temperatures.
The breaker features a C-curve tripping characteristic, suitable for applications with moderate inrush currents. It offers a significant switching capacity of up to 10kA according to EN 60898 and 20kA according to IEC 60947-2, ensuring protection against short circuits.
With 3 poles, this device provides comprehensive protection for three-phase systems. It is designed for DIN rail mounting, facilitating easy installation in control panels and distribution boards. The mechanical service life is rated for a typical 10,000 switching cycles.
Additional specifications include an insulation voltage of 440V, an overvoltage category of III, and a degree of pollution of 3. The protection class is IP20 with connected conductors. This model does not include neutral conductor switching.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The rated current is 8A at 35°C, and it derates to 6.43A at 60°C.
The operating voltage is 400V AC.
This circuit breaker has 3 poles.
The switching capacity is 10kA according to EN 60898 and 20kA according to IEC 60947-2.
The tripping characteristic is Class C.
It is designed for DIN rail mounting.