SPRING - CONTACTOR (Mitsubishi MB0509690)

A worn contactor spring can prevent the contactor from closing properly, leading to intermittent electrical connections. This aftermarket replacement part references Mitsubishi as the OE maker and cross-references part number MB0509690. The spring provides the mechanical force needed to return the contactor armature to its open position after the coil is de-energized. Without sufficient spring tension, the contactor may fail to break the circuit, causing arcing or overheating. In a typical usage context, a contactor spring that loses its temper can result in the contactor staying partially engaged. Verify the serial number or application, then call (562) 693-7748.

Part number variants: MB0509690, mb0509690