100-A09ND3 | Allen-Bradley Contactor, 3 Poles, 9A, 110/120V AC Coil

The 100-A09ND3 is a 3-pole contactor designed for electrical switching in industrial automation systems. It is commonly used to control motors, resistive loads, and lighting circuits. With its normally open contact configuration, it enables or disables current flow in connected circuits based on coil energization. This model is part of Allen-Bradley’s IEC contactor series and supports reliable load control. Its compact design and robust electrical ratings make it suitable for tight spaces and industrial panels. The device is well-regarded for safety, control, and durability.

This contactor features three poles, allowing it to switch all three phases of a 3-phase motor or load simultaneously. This configuration is standard in most industrial motor starters. The triple-pole arrangement ensures uniform control across all phases. It helps prevent imbalance and provides reliable disconnection when stopping the motor. Multi-pole switching is critical for safety and control in large machinery. It simplifies wiring in 3-phase systems.

The 100-A09ND3 is rated for up to 600 VAC, enabling its use in a broad range of industrial power systems. It complies with IEC standards for safe and efficient power switching. This rating allows it to control motors and loads in mid-voltage applications. The insulation and contact design ensure safety at full rated voltage. Proper installation and overcurrent protection are required for safe operation. This makes it suitable for motor starters and distribution panels.

The contactor uses an open body style with screw terminals, which allows it to be mounted in standard control panels. The terminals are designed for secure wire connection and are labeled for easy identification. Mounting is typically done on a DIN rail or directly onto a backplate. The open-frame style facilitates cooling and visibility during inspection. It offers flexibility for various enclosure types. This format also allows accessory blocks to be easily attached.

No, the Allen-Bradley 100-A09ND3 has been discontinued and is no longer manufactured by Rockwell Automation. While existing stock may still be found from resellers or surplus vendors, it is no longer part of the active product catalog. Users are advised to migrate to newer models with equivalent or improved specifications. Allen-Bradley recommends functional replacements within the 100-C or 100-E contactor series. Lifecycle tools from Rockwell can help verify compatibility and availability.