The Siemens 5SU1336-7FP06 is a SENTRON-series RCBO (residual current circuit breaker with overcurrent protection) in a 3-pole, instantaneous design. It carries a 6 A rated current at 30 °C with a C tripping characteristic, meaning it handles moderate inrush currents typical of motor and lighting loads without nuisance tripping. Breaking capacity is 6 kA per EN 60898 and IEC 60947-2, sufficient for most commercial and light industrial distribution boards where the prospective fault current stays under that threshold. The 400 V AC rating at 50 Hz matches standard European low-voltage networks.
Temperature derating and panel fit
The 6 A rating is only valid at 30 °C. At 40 °C it derates to 5.7 A, at 50 °C to 5.3 A, and at 60 °C to 5 A. If the distribution board runs warm — say 55 °C inside a sealed enclosure — the usable current drops to 5.1 A. Account for this in the branch-circuit load calculation; a 6 A RCBO at 55 °C cannot protect a 6 A continuous load. The unit occupies 3 modular width units (54 mm) on a DIN rail, with a depth of 72 mm and height of 85 mm. Mounting position is unrestricted, and supply can enter from either top or bottom, simplifying busbar layout in crowded panels. The IP20 rating applies only when the distribution board is installed with conductors connected.
Compliance and approvals
Rated insulation voltage (Ui) is 500 V, and surge voltage resistance is 4 kV, placing it in overvoltage category III for fixed installation. Degree of pollution 3 means it is suitable for industrial environments where conductive dust or occasional condensation may occur. The RCBO is designed to EN 60898 and IEC 60947-2, the two primary standards for MCBs and RCBOs in European low-voltage switchgear. The halogen-free construction (No) is typical for standard residential and commercial boards; if a project mandates halogen-free materials for fire-safety reasons, check the SENTRON portfolio for a halogen-free variant.