The 5SJ4132-7HG40: The C-curve (tripping characteristic C) means this breaker is designed for moderate inrush currents, typical of motor starters, transformers, and lighting ballasts. It will hold through a short-duration surge up to 5-10 times the rated current before tripping magnetically. The 10 kA rating per EN 60898 covers the standard residential/commercial fault-current requirement; the 15 kA rating per IEC 60947-2 gives additional headroom for industrial panel applications where higher prospective fault currents are expected. The single-pole (1P) design switches only the phase conductor, with no neutral switching.
The 18 mm width (1 modular unit) and 70 mm depth mean it occupies minimal rail space and fits standard distribution boards. The IP20 rating applies with connected conductors; IP40 in the handle range offers basic protection against tool entry. Vibration resistance is 50 m/s² at 25-150 Hz and 60 m/s² at 35 Hz. Sealable design allows lockout/tagout for maintenance isolation.