Circuit Breaker Locking Device – for Single Pole MCB’s. Opened & closed with Screwdriver. Color: Red. DESCRIPTION: ● Nylon PA6 construction, Temp: -20 upto 150 Deg.C ● Compact design makes it a versatile lockout device, install on MCB with toggle thickness 4mm and less. ● Permits door closure in panels with minimum clearances between door and device. ● Locks certain models of bottle fuse holders as well. Weight: 0.004 Kg. (4 gms)