What the 57-75 A range means for your line
The ABB MS495-75E is a 3-phase manual motor protector, Type E, covering the 57-75 A range. That current window fits motor FLA from about 57 A up to 75 A — a common bracket for 30–40 HP motors at 460 V, depending on the motor's service factor. If your motor's nameplate full-load amps fall inside that band, this protector sets the overload trip without needing a separate heater pack.
How it compares to the MS132-6.3
The MS132-6.3 is the same class — a 3-phase manual motor protector — but its current range tops out at 6.3 A. That's a completely different motor size bracket: fractional-horsepower pumps or small conveyors vs the 30-40 HP loads the MS495-75E covers. The mounting footprint and terminal sizing differ accordingly; you won't drop an MS495-75E into a panel wired for an MS132-6.3 without reworking the power conductors and the DIN-rail layout.