Electrical systems are integral to modern infrastructure, powering everything from residential buildings to industrial complexes. With such widespread reliance on electricity, ensuring the safety of individuals working with or around electrical equipment is of paramount importance. One of the key measures in achieving this safety is the use of lockout/tagout (LOTO) systems. These systems are designed to prevent accidental energization of equipment during maintenance or servicing, thus minimizing the risk of electrical hazards. The IEC 60947-2 certified electrical equipment lockouts provide a standard framework for ensuring the safety of electrical systems during such operations.

What is IEC 60947-2? The IEC 60947-2 standard, published by the International Electrotechnical Commission (IEC), is a comprehensive guideline for low-voltage switchgear and controlgear. This standard is specifically focused on circuit breakers, which are essential components in protecting electrical circuits from overloads and short circuits. IEC 60947-2 outlines the safety requirements for the design, testing, and operation of these circuit breakers, ensuring they function as intended to prevent electrical failures and accidents. While IEC 60947-2 primarily deals with the technical specifications of electrical equipment, it also touches on aspects related to safety during maintenance and operation. These safety considerations are directly linked to the proper use of lockout devices in electrical systems, which is crucial for reducing electrical shock and other hazards during maintenance activities.