B-curve trip and the 10 A sweet spot
The 5SU1354-3KK10 is a 1P+N RCBO from the Siemens SENTRON series, combining overcurrent and residual current protection in a single 2-module-width package.
Breaking capacity and dual-standard rating
The 20 kA figure under 60947-2 gives the specifying engineer headroom for coordination with upstream MCCBs or fuses in a 400 V industrial installation.
Current production and sourcing posture
This is the active SKU for the SENTRON RCBO line in this rating.
Dimensions are 90 mm height, 36 mm width, 77 mm depth — the 36 mm width corresponds to 2 modular units on a standard DIN rail. Installation depth is 70 mm. Mounting position is any, and supply can be fed from top or bottom. Halogen-free and silicon-free construction suits environments sensitive to outgassing.