60947sarjan

The 60947-series, commonly referred to as IEC 60947, is a family of international standards from the International Electrotechnical Commission (IEC) that governs low-voltage switchgear and controlgear. It defines safety, performance, and testing requirements for electrical equipment intended for operation at nominal voltages up to 1000 V AC or 1500 V DC and within defined current ranges.

The scope covers a wide range of devices used to control and protect electrical circuits, including contactors and motor-starters, switches and disconnectors, control circuit devices (such as pushbuttons, indicator lights, relays, and timers), and protection components used in low-voltage systems. The standards address general design principles, performance criteria, and methods for evaluating conformity.

The 60947-series is organized into multiple parts. The first part provides general rules that apply across the family, while subsequent parts address specific equipment categories and their particular requirements. The exact part numbers and scope can vary by edition and national adoption, but the overarching goal is to harmonize international requirements for low-voltage switching and control devices.

In practice, IEC 60947 standards are used by manufacturers, engineers, and regulators to ensure product safety and interoperability. They facilitate consistent design, qualification, and conformity assessment for equipment used in industrial, commercial, and residential electrical installations.

Regional adaptations and related standards may reference IEC 60947 with local amendments or translations. The 60947-series is complemented by other IEC standards addressing related equipment and higher voltage classifications.