The Siemens 5SU9336-1CN63 is a 3-pole RCD-operated circuit breaker (RCBO) from the SENTRON family, combining overcurrent and residual current protection in one 6-module-width unit. The 63 A rating at 30 °C is the headline number for sizing into a distribution board, but the derated values matter for real panel conditions: 58.6 A at 40 °C, 56.1 A at 45 °C, 54.8 A at 50 °C, and 53.6 A at 55 °C. If your enclosure runs warm, the lower figure governs the load you can protect. The 30 mA residual current trip is standard for personnel protection (indirect contact) in TN and TT systems.
Occupies 6 modular width units (108 mm) on a DIN rail. Depth is 77 mm, height 90 mm. Installation depth is 70 mm. Mounting position is unrestricted, so it can go sideways or inverted if the cabinet layout demands it.
The 5SU9336-1CN63 carries the Siemens SENTRON brand and complies with designation F (protective device).
Breaking capacity: 6 kA. Energy limitation class 3 means it lets through limited fault energy, helping with downstream coordination. Rated insulation voltage (Ui) is 440 V. Operating frequency is 50/60 Hz. Test circuit minimum voltage is 125 V.