Application: The industry in general, Railway, shipbuilding, paper, sugar, automobile... From 40 to 400A. The SAFEBLOC polycarbonate circuit breaker and isolation switch boxes are installed in direct proximity to the machines and engines on industrial sites. They allow any users, even those who are not electricians, to:Check, without any risk of error, the status of the switch and therefore the engine: if the contact blades are visible, the switch is in the 0 position ; if the blades are not visible, the switch is in the 1 position.Maintain the switch, and therefore the machine, in the 0 position by using a padlock. Three padlocks can be placed on one handle.