ABB, AEG (GE), BARKSDALE, BLOCK, CONTA-CLIP, DANFOSS, DEIF, DOLD, EAO LUMITAS, FINDER, HUNDT+WEBER, ISMET, L&S ELEKTROTECHNIK, MERLIN GERIN, MOELLER (EATON), PEPPERL+FUCHS, PHOENIX, RITTAL, ROCKSON, SCHIELE, SCHMERSAL (ELAN), SCHNEIDER ELECTRIC, SELCO, SIEMENS, SPOHN+BURKHARDT, SQUARE D, TELE, TELEMECANIQUE, TRAFAG, WEIDMÜLLER, WAGO, WEIGEL