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The Siemens 5SJ4135-7HG40 is a miniature circuit breaker (MCB) from the 5SJ4 series, designed for reliable protection in industrial and mechanical engineering applications. This 1-pole device operates with a C-curve tripping characteristic and has a rated operational current of 35A at 30°C, with derating at higher temperatures.
Key electrical specifications include a rated supply voltage of 400V AC and a maximum operating voltage of 120V AC or 60V DC according to UL 489 and CSA C22.2 No. 5-02 standards. The switching capacity is 10kA according to EN 60898 and 15kA according to IEC 60947-2. It also features a short circuit breaking capacity of 14kA at AC according to UL 1077 and CSA C22.2 No.235.
Designed for easy installation, this MCB has a width of 18mm (1 modular width unit) and a depth of 70mm, suitable for mounting on a standard DIN rail. It offers touch protection and combined terminals for flexible wiring. The device is halogen-free and silicon-free, contributing to environmental compliance. Its mechanical service life is typically 10,000 switching cycles.
The rated supply voltage is 400V AC at 50Hz. For UL 489/CSA applications, operating voltage is 120V AC maximum; for DC, rated maximum is 60V DC (single channel).
The tripping characteristic is C-curve.
According to EN 60898: 10kA; according to IEC 60947-2: 15kA; according to UL 1077: 14kA.
The mechanical service life is 10,000 switching cycles.
IP20, with connected conductors; IP40 in the handle range.
The rated operational current is 35A at AC and at temperatures up to 40°C, with slight derating at higher temperatures.
Power loss is 3.7W per pole at rated current in hot operating state.