The Siemens 5SU1353-0KV10 is a Type AC FI/LS-protector (RCBO) combining overcurrent and residual current protection in a single 1+N-pole module. Rated B 10A with a residual sensitivity of 30 mA and a short-circuit breaking capacity of 4.5 kA, it fits residential and light commercial distribution boards where earth leakage and overload protection are needed in one DIN-rail slot.
Lifecycle and sourcing
The 5SU1353-0KV10 carries a lifecycle stage of current, meaning Siemens continues to manufacture and support this order code as a standard catalogue item. For a BOM line requiring this exact RCBO, the part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
What the ratings mean for fit
The B 10A trip curve means the magnetic release operates between 3 and 5 times rated current (30–50 A), suited for resistive and light inductive loads like lighting circuits or general-purpose socket outlets. The 30 mA residual sensitivity (Type AC) detects sinusoidal AC fault currents only — not pulsed DC or smooth DC, so it is not a fit for circuits feeding VFDs, UPS systems, or EV chargers that can generate non-sinusoidal leakage. The 4.5 kA breaking capacity (Icn) is the rated short-circuit withstand; verify that the prospective short-circuit current at the installation point does not exceed this value, or coordination with an upstream MCB/fuse is required. The 1+N-pole format switches the line conductor only; the neutral is solidly connected through.
Deployment context
Snap-on DIN-rail mounting for 70 mm deep distribution boards. The Type AC designation limits this RCBO to standard AC residual current applications — not suitable for three-phase rectifier loads or circuits with electronic ballasts where pulsed DC leakage may occur.