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The Siemens 5SJ4103-7HG40 is a 1-pole miniature circuit breaker from the 5SJ4 series, designed for reliable circuit protection in industrial and mechanical engineering applications.
This breaker features a tripping characteristic class C and a rated operational current of 3A at 30°C, with a maximum switching capacity of 10kA according to EN 60898 and 15kA according to IEC 60947-2. It supports a supply voltage of 400V AC and has an insulation voltage of 440V AC. The operating voltage is rated up to 120V AC and 60V DC.
Designed for easy installation, the 5SJ4103-7HG40 is suitable for DIN rail mounting and has a compact width of 18mm, corresponding to 1 modular width unit. It offers touch protection and is sealable. The breaker is compliant with various agency approvals including CCC, CE, CSA, EAC, UL, and VDE.
Additional features include a mechanical service life of 10,000 switching cycles and a power loss of 1.8W per pole at rated current. It is halogen-free and silicon-free, contributing to environmental safety. The terminals accommodate conductor cross-sections from 0.75 mm² to 25 mm² with a maximum tightening torque of 3.5 N·m.
C-curve.
3 A at 30-40 °C ambient.
10 kA per EN 60898 and 15 kA per IEC 60947-2. For UL/CSA: 14 kA at 120 V AC.
Rated 400 V AC (50 Hz), insulation 440 V. UL/CSA: 120 V AC maximum.
10,000 switching cycles.
DIN rail mount in any position.
Pollution degree 3 and overvoltage category 3.