To ensure you are purchasing genuine products, always request the unique serial number and QR code verification details from the supplier. Key technical specifications to validate include the Rated Current (In), Breaking Capacity (Icu/Ics), and Tripping Curve (Type B, C, or D). For industrial applications, ensure the units meet IEC 60947-2 standards, while residential units should comply with IEC 60898-1. Always cross-reference the technical data sheet provided by the supplier with the official ABB global catalog to prevent purchasing counterfeit or refurbished units.