Allen-Bradley 100-A09NZ243 AC Magnetic Contactor

Allen-Bradley 100-A09NZ243 is a Bulletin 100-A MCS three-pole magnetic contactor with a 24 VDC coil and three normally open power contacts. This 9 A-rated device uses an open-style enclosure designed for mounting in standard control panels to switch three-phase loads. The 24 VDC coil accepts DC control signals from PLCs or local control circuits, energizes to close the contacts, and returns to the de-energized state when power is removed. As part of the 100-A family, it provides compact, robust switching for small motor, blower, or pump circuits in industrial automation, with the ability to carry three concurrent live conductors in a single device. Its open style simplifies wiring, rack mounting, and maintenance in panel assemblies, while offering the reliability expected from Allen-Bradley components. Typical applications include control of 3-phase motors, fans, conveyors, and other medium-duty loads where a dedicated 9 A, 3-pole contactor is appropriate, and a DC-control coil allows direct interfacing with PLC outputs or control relays without an intermediate DC power supply for the coil.