The Siemens 5SU1324-7RC32 is a 2-pole RCBO rated at 32 A with C characteristic and Type A 30 mA residual current protection, packaged in a 4-module width for DIN-rail mounting in final-distribution boards.
Type A residual-current detection covers sinusoidal AC faults plus pulsating DC faults, which is the minimum requirement for circuits feeding single-phase rectified loads like washing machines, LED drivers, or IT equipment. The 30 mA sensitivity provides supplementary protection against direct contact for circuits where the upstream RCD is 300 mA or higher. At 4 modules wide on a DIN rail, this RCBO consumes 72 mm of panel space. In a crowded distribution board, that width trades off against the convenience of a combined overcurrent and earth-leakage device in one unit — no separate RCCB plus MCB needed.