The Siemens 5SU1353-7KK08 is a 2-pole (1P+N) RCBO from the SENTRON 5SU1 series, combining overcurrent protection and residual current detection in a single 36 mm-wide module. That Type A rating means it catches pulsating DC fault currents — the kind rectified loads like switch-mode supplies and VFDs can produce — not just pure AC sine-wave faults. If your panel feeds electronics, this is the right residual-current class.
Ratings that matter for the panel
Above that, the continuous current derates: 7.52 A at 40 °C, 7.28 A at 45 °C, 6.96 A at 50 °C, 6.48 A at 55 °C, 6.48 A at 60 °C, 6.16 A at 65 °C, and 5.84 A at 70 °C.