Key ratings and what they mean for the panel
The 5SU9356-7KN06: The 6 A rating holds at 30 °C ambient; derate to 5.64 A at 40 °C, 5.46 A at 45 °C, 5.22 A at 50 °C, and 4.86 A at 55 °C. If the panel runs warm, size the branch circuit load against the derated figure, not the 30 °C number. The C characteristic means the magnetic trip fires at 5 to 10 times In (30–60 A), which suits moderate inrush loads like small motors or lighting ballasts — not pure resistive heaters (B curve) or heavy transformer starts (D curve). Breaking capacity is 6 kA per EN 60898 and 10 kA per IEC 60947-2. The 10 kA figure is the one to use for industrial panel SCCR calculations; it tells you the device can safely interrupt a fault up to 10 kA at the rated voltage without welding or exploding. Overvoltage category III and pollution degree 2 mean it is rated for fixed-installation distribution boards, not for outdoor or wet locations. The 30 mA Type A residual-current element catches sinusoidal AC faults and pulsating DC faults (typical of rectified loads like VFDs, LED drivers, or switched-mode supplies). It is instantaneous — no intentional delay — so it trips within 40 ms on a ground fault. That makes it unsuitable for circuits with high leakage at startup (e.g., long cable runs or multiple filtered drives) where a G/S type with short-time delay would be needed. Supply can enter from top or bottom, and the device can be mounted in any orientation. Installation depth is 70 mm behind the panel face, with the overall depth at 77 mm including the front profile. Touch protection is built in, and the unit is halogen-free and silicon-free — relevant for clean-room or corrosive-environment installs where outgassing matters.