Key exchange box W

W – Key Selector Box Key Exchange Boxes The W key selector box is designed to enable the controlled release of keys by the positioning of a selector knob. It is typically used in switchgear applications ensuring multiple supplies are not applied to common bus bars. The W box is suitable for releasing any number of keys, in a pre-determined sequence in differing combinations. A maximum of six selector knob positions is available. The requirement for this type of product usually arises due to various system setups i.e. in the control of switchgear. The W box is supplied in an enclosure suitable for surface mounting. OPERATION Castell W key selector boxes are used in switchgear applications to ensure multiple supplies are not applied to common bus bars. USAGE W key selector boxes should be used in switchgear applications to allow a safe access to potential hazardous and dangerous areas with one or more access points. The W key selector box is not designed for security purposes, such as access to a building. No hazardous substances were used in the manufacture of this product. APPLICATION The W Key Selector Box safety component is part of an integrated safety system. A typical application of the W key selector box is switchgear to ensure that multiple supplies are not applied to common bus bars. In the application illustrated key I1 will operate incomer 1, key I2 will operate incomer 2 and key I3 will operate incomer 3. Key B1 operates bus coupler 1 while key B2 operates bus coupler 2. When the key is inserted, the corresponding switch is closed. The system shown is in condition 1 (see table) and has the three incomer switches closed and the busbar switches open.