SIRIUS 3RW5246-2TC05 soft starter — current production, multi-protocol fieldbus
Trip class is configurable as CLASS 10A (default), 10E, or 20E per IEC 60947-4-2, giving the commissioning engineer flexibility to match the motor thermal model and starting duty cycle without swapping hardware.
Mounting, clearance, and environmental limits
Fastening method is screw fixing; the unit measures 203 mm deep by 210 mm wide by 393 mm high. Required clearances: 100 mm upwards, 10 mm forwards, 0 mm backwards, 75 mm downwards, and 5 mm at the side — these numbers govern the panel layout and must be respected for airflow and arc-flash containment. Mounting position allows a vertical mounting surface with +/-90° rotation and +/-22.5° tilt front-to-back, which simplifies installation in cabinets where the backplane is not perfectly plumb. Shock resistance is 15 g / 11 ms, dropping to 12 g / 11 ms if potential contact lifting is a concern. Pollution degree 3 per IEC 60947-4-2 confirms suitability for industrial environments with conductive dust or occasional condensation.
Approvals and compliance documentation
UL approval, CSA approval, and CE marking are all confirmed on this variant — the compliance package covers North American and European installations without additional agency review. The unit supports firmware updates in the field, and an error logbook is available when paired with the special accessory. Soft torque and pump ramp down are built-in features for reducing mechanical shock on conveyors or pump start/stop cycles. Remote reset is possible by cycling the 24 V control supply voltage; auto-reset is also selectable, which the field service tech can use to restart after a cleared fault without a panel visit.