High protection class from IP54 to IP66. Basic equipment includes an IP54 mounting socket and a terminal block with pre-assembled screw terminals. Wall mounting options are available in the bottom of the box (alternatively below the cover screws) and there are metric pre-formed knockouts. No additional drilling or milling is required - simply knock out the openings with a screwdriver and install the included IP54 mounting sockets. The cover made of impact-resistant polystyrene is standardly sealable. To achieve a higher protection class (up to IP66), it is sufficient to replace the mounting sockets with cable glands. The housing material is halogen-free and has the UL "Yellow Card.".