The Siemens SENTRON 5SJ4160-7HG40 is a 1-pole miniature circuit breaker with a C tripping characteristic, rated 60 A at 30 °C and 40 °C. It accepts AC or DC voltage and is designed for standard mounting rail installation in any position.
Ratings and derating
At 45 °C the continuous current rating drops to 58.2 A, at 50 °C to 56.4 A, at 55 °C to 54.4 A, and at 60 °C to 52.8 A. The maximum ambient temperature is 75 °C, minimum -40 °C. The C-curve trips between 5 and 10 times rated current, typical for motor and lighting branch circuits where moderate inrush is expected. Overvoltage category 3 and pollution degree 3 suit it for fixed-installation distribution panels.
Mechanical and environmental
Occupies 1 modular width unit (18 mm), depth 70 mm, height 90 mm. Vibration resistance rated at 50 m/s² from 25 to 150 Hz and 60 m/s² at 35 Hz for 4 seconds. IP20 with connected conductors, IP40 in the handle range.