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The Siemens 5SY4108-5 is a 1-pole miniature circuit breaker with Type A tripping characteristic. It is designed for overcurrent protection of sensitive loads such as semiconductor circuits.
The breaker is rated for 8A at 35°C ambient temperature, with derated currents at higher temperatures: 7.62A at 40°C, 7.42A at 45°C, 7.22A at 50°C, 7A at 55°C, and 6.78A at 60°C. The rated voltage is 400V AC, with an insulation voltage of 440V AC and a supply voltage of 230V AC.
Typical applications include industrial control panels, residential distribution boards, and commercial electrical installations requiring sensitive overcurrent protection. The compact 1-pole design fits standard DIN rail mounting in electrical enclosures.
The rated voltage is 400V AC.
The rated current is 8A at 35°C ambient temperature.
It is a 1-pole circuit breaker.
The tripping characteristic is Type A.
The insulation voltage rating is 440V AC.
The supply voltage is 230V AC.