It is designed for branch-circuit protection in final distribution boards, switching both phase and neutral conductors. That is a standard residential and light-commercial level; if your panel's prospective short-circuit current exceeds 3 kA, you need an upstream current-limiting device or a higher-rated breaker.
Installation depth is 55 mm — shallower than many SENTRON siblings (the 5SU9 RCBOs run 70–77 mm), which matters when the gland plate or enclosure depth is tight. IP20 rated, so it belongs inside a distribution board or enclosed panel — not in a wet or dust-exposed location. Overvoltage category III confirms it is rated for fixed-installation downstream of the utility meter. Energy limiting class 3 means it restricts let-through energy in a fault, helping with downstream device coordination and reducing arc-flash risk on the branch.