Rated supply and motor protection — what the Trip Class means for your load
The 3RW5215-3TC04: Rated for 200 to 480 V AC supply, this soft starter covers the common three-phase motor voltages across North American and European installations. The Trip Class defaults to CLASS 10A per IEC 60947-4-2, which means the overload protection trips within 10 seconds at 7.2× the set current — fast enough to protect standard squirrel-cage induction motors during a stall or jam without nuisance tripping on normal starts. You can also select CLASS 10E or CLASS 20E via parameterization if your application needs a longer acceleration window (e.g., high-inertia loads like centrifuges or large fans).
Minimum motor current and load floor
The minimum settable motor current is 11.5 A, with a minimum load requirement of 15% relative to the smallest settable Ie. This means the soft starter is sized for motors drawing roughly 11.5 A and up — below that floor, the overload protection may not resolve accurately, so pair it with a motor whose full-load current is at or above that threshold.
Screw fixing to a vertical mounting surface, with ±10° rotation and tilt allowance. Clearance requirements: 100 mm upward, 75 mm downward, 10 mm forward, 0 mm backward, and 5 mm at the sides. Shock resistance is 15 g / 11 ms, with potential contact lifting at 12 g / 11 ms, so it holds up in moderate-vibration environments like pump skids or conveyor drives.
Carries CE, UL, and CSA approvals, so it is accepted across the EU, US, and Canadian markets without additional certification work. The SIRIUS brand family positions it as a standard-duty soft starter for general industrial motor control.