The Siemens 5SU1324-7FR16 is a 2-pole RCBO from the SENTRON Super Resistant K series, combining overcurrent protection (curve C, 16 A rated at 30 °C) and residual current protection (30 mA, Type A) in a single 36 mm wide module (2 modular width units). Type A residual current detection catches pulsating DC fault currents from electronics and rectified loads, not just sinusoidal AC.
At 40 °C it derates to 15.2 A, at 50 °C to 14.3 A, and at 60 °C to 13.4 A. If your panel internal temperature runs above 30 °C — common in densely packed enclosures — use the derated figure for your load calculation, not the 30 °C headline.
Panel integration — footprint and wiring
The 5SU1324-7FR16 occupies 2 MW (36 mm) on a DIN rail, with a depth of 72 mm and an installation depth of 70 mm. The 85 mm height fits standard distribution board cutouts. Insulation voltage is rated 500 V.