What this RCBO brings to the panel
The Siemens 5SU1324-6FN20 is a 2-pole RCBO from the SENTRON family, combining overcurrent protection and residual current detection in a single 36 mm wide module (2 MW).
Derating and environmental limits
Rated 20 A at 30 °C ambient; derates to 19.5 A at 40 °C, 19.2 A at 45 °C, 18.9 A at 50 °C, 18.7 A at 55 °C, and 18.4 A at 60 °C. If the panel ambient runs above 40 °C, factor the derated value into the load schedule — a 20 A circuit at 50 °C is effectively an 18.9 A circuit. Insulation voltage Ui 500 V, surge voltage resistance 4 kV.
Snap-on DIN rail mount, 2 MW wide (36 mm), depth 72 mm, installation depth 70 mm. The halogen-free designation is No, so if the specification requires halogen-free materials (e.g., for rail or marine), this part does not meet it.