What the ratings mean for fit
The C11F4TM050B: The 50 A rating at 40 °C is the continuous current the breaker carries without tripping in a 40 °C ambient — standard for most enclosed distribution panels. The 36 kA at 415 V AC is the maximum prospective fault current it can safely interrupt; that F-class performance covers most commercial and light industrial service entrances where the available fault current stays under that level. The 4P (four-pole) configuration with neutral left is typical for TN or TT systems where the neutral is switched and protected. Thermal-magnetic trip (TM-D) means it responds to sustained overloads (thermal element) and short-circuits (magnetic element) with a fixed magnetic threshold — no electronic adjustment, which simplifies specification for fixed-load feeders.
Mounting and integration
Mounts on a backplate in horizontal or vertical orientation, flat on the back. The 108 mm width, 137 mm height, and 80 mm depth occupy 12 module pitches of 9 mm. Front connections top and bottom accept compression lugs or busbars. IP40 enclosure protection means it is protected against tools and small wires >1 mm — fine for a clean indoor panel; no washdown rating. Pollution degree 3 per IEC 60664-1 covers conductive pollution typical in industrial control rooms.