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push O FIpush ONFunctionsand characteristicsConnections 0Optional accessoriesPB100790-32Vertical-connection adaptersMounted on front-connected devices or chassis, the adapters facilitate connection toa set of vertical busbars.PB100791-32Cable-lug adaptersCable-lug adapters are used in conjunction with vertical-connection adapters.They can be used to connect a number of cables fitted with lugs.To ensure adequate mechanical strength, the connectors must be secured togethervia spacers (catalogue number 07251).PB100779-32Interphase barriersThese barriers are flexible insulated partitions used to reinforce isolation ofconnection points in installations with busbars, whether insulated or not.For Masterpact NT/NW devices, they are installed vertically between rear connectionterminals. They are mandatory for NT devices at voltages > 500 V.PB100792-32SpreadersMounted on the front or rear connectors, spreaders are used to increase the distancebetween bars in certain installation configurations.DB101157Arc chute screenFor fixed Masterpact NT front-connection versions and with vertical-connectionadapters oriented towards the front, an arc chute screen must be installed to respectsafety clearances.OO O F dischargedFor Masterpact NT 1000 V, an arc chute screen must be installed to respect safetyclearances.42