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This Siemens 5SY4104-8 is a single-pole miniature circuit breaker (MCB) from the SENTRON series, designed for reliable overcurrent protection in electrical systems. It operates with a rated supply voltage of 400V AC and has a current rating of 4A at 35°C, with a D-type tripping characteristic suitable for inductive loads.
The MCB offers a breaking capacity of 10kA according to EN 60898 and 15kA at DC according to IEC 60947-2. It is built with a mechanical service life of 10,000 switching cycles and features touch protection for enhanced safety. The unit is designed for DIN rail mounting and has a compact width of 18mm, fitting standard electrical enclosures.
Key technical specifications include an insulation voltage (Ui) of 440V AC and an overvoltage category of III. The device is suitable for mechanical engineering and industrial applications. It also features halogen-free and silicon-free construction, contributing to environmental safety standards.
The supply voltage is 230 V for single-phase operation and 400 V for multi-phase operation at AC.
The breaking capacity is 10 kA according to EN 60898 and 35 kA according to IEC 60947-2.
The operational current rating is 4 A at 35°C (AC).
This circuit breaker has 1 pole.
Yes, it has touch protection.
It has approvals from CCC, CE, EAC, UR, and VDE.