Allen-Bradley 100-A38NZ243 Three-Phase Contactor

Allen-Bradley 100-A38NZ243 Three-Phase Contactor is a non-reverse, 3-pole motor starter with a 24 VDC coil, designed to switch three-phase loads in industrial controls. It is rated for 38–45 A per pole and includes one normally open auxiliary contact (1NO) for feedback or interlock applications. This model—100-A38NZ243—appears in distributor listings as part of Allen-Bradley’s 100-A series, typically used to control medium-to-large three-phase motors in equipment such as conveyors, fans, and pumps. The 24 V DC coil makes it compatible with standard DC-control circuits and PLC-driven coil drives. According to listings from multiple distributors, the part has been discontinued by the manufacturer, which can affect availability and cross-reference considerations. When selecting a replacement or planning a panel, verify the exact pole count (3) and auxiliary contact configuration (1NO) to ensure proper control logic and interlock requirements.