The Siemens 5SY4115-7CV is a 1-pole miniature circuit breaker with C-curve tripping characteristic, rated 1.6 A at 230/400 V AC and carrying a 15 kA breaking capacity per IEC/EN 60947-2.
The 1.6 A rating holds at 35 °C ambient. At 40 °C it derates to 1.48 A; at 50 °C to 1.4 A; at 55 °C to 1.29 A. The maximum operating temperature is 75 °C, with humidity limits of 95 % up to 55 °C, tapering to 35 % at 75 °C. The storage range goes down to -40 °C, so it handles cold warehouses before installation.
Panel fit and compliance
Sealable (can be locked in OFF position with a padlock hasp). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz — fine for machine-mounted sub-panels but not for direct engine mounting.
