Industrial BUC443UMM30 Definite Purpose Contactor

BUC443UMM30 is a BU Controls definite purpose contactor, a three-pole DP switch designed for controlled power circuits in equipment that specifies a dedicated DP device. It carries a 40 A, 240 V rating, providing a robust, compact solution for switching moderate-load loads in industrial controls. Market listings identify this exact model as new old stock (NOS), reflecting its status as surplus inventory while still suitable for use where a BU Controls DP contactor is required. The model number places it within BU Controls’ family of definite-purpose contactors, with close relatives such as BUC438UMM30 also appearing in distributor catalogs and inventory systems. As a definite purpose contactor, BUC443UMM30 is part of BU Controls’ DP portfolio and can be referenced alongside other BU DP units in the same product line. The BUC443UMM30 designation confirms a 3-pole, 40 A, 240 V specification within the BU DP lineup, helping engineers align it with existing control schematics and OEM equipment requirements.