Siemens SENTRON 5SU1336-6FP16 RCBO — 3-Pole, 16 A, Type B, 6 kA
The 400 V AC, 50 Hz rating and overvoltage category III cover standard mains supply conditions. Rated current derates with ambient temperature: 15.2 A at 40 °C, 14.8 A at 45 °C, 14.3 A at 50 °C, 13.9 A at 55 °C, 13.4 A at 60 °C, and 12.5 A at 70 °C. This derating curve matters when the RCBO is installed in a crowded enclosure where internal temperature rise is expected — the 16 A label applies only at 30 °C ambient.
Height is 85 mm. Supply can enter from either the top or bottom, simplifying busbar and cable routing in the panel. Rated for 95% humidity (non-condensing).
Electrical ratings and compliance
Insulation voltage (Ui) is 500 V. Surge voltage resistance is 4 kV. Surge current withstand is 0.25 kA at 8/20 µs waveform. Energy limitation class 3 indicates the device limits let-through energy to a low level during fault clearing, which aids downstream coordination. The RCBO is designed for instantaneous operation — no intentional time delay. Tested at a minimum of 340 V for routine testing.