Circuit Breaker Locking Device - locks outs 600A MCCB's with Oversized toggles. Break Blocker Components, 480v~600v. ? Made from engineering plastic alloy. ? Set consists of 2 Self Adhesive Bases, 1 Red & 1 Green Blocking Bars and 1 Self Adhesive Bar Holder. ? The Green colour bar can be used to indicate “locked on”. ? The Red colour bar can be used to indicate “locked off” Packaging: 5 Pcs. per set.