nVent ERICO 561166 Compact power block with high short circuit current rating. Tinned copper or aluminum block allows for copper or aluminum conductor connections. Screw retaining cover is hinged and removable. Design allows for visual inspection of conductor and confirmation of connection. Gangable for building multi-pole power blocks. Easily clips onto DIN rail or mounts to panel with screws. Voltage detection and measurement connection. 95% fill ratio. Halogen free. RoHS compliant.