The Siemens 5SY6150-7 is a 1-pole SENTRON miniature circuit breaker with a C-curve trip characteristic — meaning it holds through momentary inrush up to 5–10× rated current before tripping magnetically, which suits it for mixed resistive and moderate inductive loads like contactor coils, small motor starters, and control transformers in a panel. Breaking capacity is dual-rated: 6 kA per EN 60898 and 10 kA per IEC 60947-2, with an additional 15 kA at DC per IEC 60947-2. The DC rating of 15 kA at 60 V (max 72 V) covers control-circuit DC supplies common in 24 VDC panels. The 18 mm width (1 MW) and 76 mm depth let it snap onto a standard DIN rail in any mounting position, with a quick-assembly fastening system.
Integration notes
The surrounding temperature influence table (max 95% RH at 55 °C, derating to 35% at 75 °C) tells you the breaker's thermal trip element will shift slightly at high ambient — factor that into coordination studies if the panel runs hot.