Rated insulation voltage is 800 V, and the interrupting ratings are 440 kA at 415 V and 187 kA at 690 V — that is the SCCR headroom you need for high-fault-capacity industrial distribution, not a residential panel. The 3-pole format fits standard SENTRON 3VA2 busbar and mounting footprints.
Dimensions are 110 mm deep, 138 mm wide, and 248 mm high — the 3VA2 footprint is shared across the 250 A frame size, so if you are replacing an existing 3VA2 or retrofitting into a panel with SENTRON busbar, the mechanical fit is direct. Front protection is IP40, meaning it is splash-proof on the face but not sealed for washdown environments — keep it inside a cabinet rated for the overall enclosure IP.
The 5SQ2370-2YA05, -2YA04, and -2YA01 are Siemens 3VA2 breakers in the same 250 A frame but with different trip units and accessories. The 3VA2325-0MN32-0AA0 uses the ETU350M electronic trip with adjustable trip class; the 5SQ series variants typically carry fixed thermal-magnetic or lower-function electronic trips. If your BOM specifies the ETU350M for motor-protection coordination, the 5SQ parts will not drop in without a trip-unit swap. The physical footprint and busbar connection are identical across the 3VA2 250 A frame, so panel cutouts and wiring do not change — the decision is purely about the trip curve and communication capability.