Product Description Wholesale 25A/40A Current Collector For Crane Enclosed BusbarThe current collector is 1 of the main devices on the slide-contact wire system to pick up electric energy. It conducts the electric energy directly to the electrical appliances through the sliding contact between the collector brush and the guide rail, so as to realize the … Continue reading China supplier Wholesale 25A/40A Current Collector for Crane Enclosed Busbar