Based on the provided reference, a large 3 Phase (415v / 63A) floor saw can cut reinforced concrete up to 480mm deep.
These specific types of large floor saws are designed for heavy-duty work like cutting through reinforced concrete floors. The reference notes that alongside their significant cutting depth capability, these machines offer features such as one-hand sawing control, a quick-release blade shaft/flange, and rear wheels for manoeuvrability. This cutting depth is substantial, allowing for deep cuts required in various construction and renovation tasks.