A bus-bar system usable for electrical cabinets for distributing electrical power supplied by an electrical supply cable comprising two or more electrically conducting wires. In some embodiments the bus-bar system comprises a predetermined number of bus-bar elements each electrically connectable to at least one of the wires of the electrical supply cable. At least one of the bus-bar elements may be formed by a group of at least two sub-bus-bar elements electrically connectable to each other in parallel. Each group of the sub-bus-bar elements may be electrically connectable to at least one of the wires of the electrical supply cable, where each of said bus-bar and sub-bus-bar elements being located adjacent at least one other bus-bar or sub-bus-bar element associated with either different electrical phase or different electrical current direction to thereby cause magnetic fields emanating from said bus-bar and sub-bus-bar elements to destructively interfere with each other.