Antitamper structure for enhanced safety: built with a robust antitamper framework that resists breach and requires substantial effort to defeat. Its compact, vividly colored design improves visibility and overall safety in busy work environments. Builtin suspension function for easy locking: includes an integrated hanging aperture that can be readily used with safety locks and caution signs, offering a comprehensive solution for secure isolation and clear hazard signaling during maintenance operations. Wide compatibility for flexible use: the circuit breaker lockout apparatus is engineered to accommodate a wide range of circuit breaker types, enabling use with both singlepole and multipole breakers to ensure safety across diverse power distribution networks. Durable Nylon PA construction: the lock body is made from nylon PA, delivering strong impact resistance and temperature tolerance, helping prevent deformation and maintain reliability over extended use. Practical use scenarios: Industrial facility maintenance: technicians isolate specific circuits in control panels during routine servicing, using the device with padlocks and warning signs to prevent reenergization. Machine troubleshooting and : secure isolation of equipment circuits to provide a safe diagnostic environment without risk of accidental energization. Field electrical upgrading: applies to modifications or upgrades of electrical distribution systems, compatible with various breaker configurations to maintain safe isolation throughout the process.