What it is and where it fits
The Siemens 5SJ4360-7HG41 is a 3-pole C-curve miniature circuit breaker from the SENTRON 5SJ4 series, designed for distribution and protection of final circuits in mechanical engineering and industrial environments. It mounts on a standard DIN rail, occupies 3 modular width units (54 mm), and can be oriented in any position. Depth is 70 mm, so check panel clearance before committing a row.
Key ratings – what they mean for your application
Rated insulation voltage 440 V AC, operating voltage 400 V AC, DC rating 60 V; breaking capacities 10 kA and 15 kA. Ambient temperature range spans -40 °C to +75 °C, so it works in outdoor cabinets or hot machine enclosures without derating concerns at the top end. Vibration resistance is spec'd at 50 m/s² over 25–150 Hz and 60 m/s² at 35 Hz for 4 seconds, which is robust for mounted equipment on vibrating surfaces.
Mounting and terminal details
IP20 with conductors connected, IP40 in the handle area – adequate for clean indoor panel environments. Pollution degree 3 and overvoltage category 3 suit industrial power distribution.