Rated for 50/60 Hz, it fits standard mains supplies.
Occupies 3 modular-width units (54 mm wide) on a DIN rail.
The closest functional peer in the same SENTRON family is the 5SL4363-7. Both are 3-pole, C-curve, same 76 mm depth and 54 mm width, same operating temperature range, same vibration resistance. The difference is breaking capacity: the 5SL4363-7 is rated 10 kA per EN 60898 and IEC 60947-2, while this 5SL6350-7MB is rated 6 kA per EN 60898. If your panel's prospective fault current is under 6 kA, the 5SL6350-7MB is the correct fit; if you need 10 kA headroom, step up to the 5SL4363-7.