A-12W-K 直流电磁继电器 A12W-K(0927) A12W-K. A12W-K-12VDC A12WN-K A12WNK-20 A12W-OH-K A12-X0-15-487-112-E A12-X0-16-418-H32-C A12-X0-16-597-M11-E