The Pin-Out, Pin-Out Wide, and Pin-In MCB Lockout Devices secure miniature circuit breakers in the OFF position to prevent accidental or unauthorized re-energizing during maintenance. Made from durable, non-conductive nylon/plastic, they fit most single- and multi-pole MCB types. The device blocks the breaker toggle using insertable pins or prongs, and a safety padlock is added to keep the circuit locked until removed by authorized personnel. These lockouts are essential for LOTO procedures in electrical panels, switchgear, HVAC systems, and industrial machinery. Key Features: Works with single-pole and multi-pole miniature circuit breakers; Pin-out / Pin-in mechanism prevents breaker toggle from being operated; Non-conductive nylon housing ensures electrical safety and insulation; Tool-free installation/removal — quick push-button or pinch-open operation; Supports padlock insertion to enforce lockout until authorised removal. Industrial Uses / Applications: Electrical panels & MCB lock-out; Switchgear maintenance; HVAC system isolation; Utility & service equipment lock-out.