Allen-Bradley 1489-A3D030 High Density IO Module

Allen-Bradley 1489-A3D030 is a three-pole, 3-amp circuit breaker from Rockwell Automation’s 1489 Control Circuit Protection family. It is rated for 480Y/277 VAC three‑phase circuits, delivering overcurrent protection for control power feeders and related loads in industrial panels. The A3D030 designation identifies a 3P device with a 3‑amp rating, designed to interrupt fault currents in three hot lines simultaneously and to safeguard downstream devices such as relays, contactors, and PLC power supplies. As part of the 1489 family, this breaker guards control circuits within panel enclosures in manufacturing environments where 480V three‑phase power is distributed. Typical applications include protecting three‑phase control feeders in machinery, conveyors, and process equipment, ensuring safe shutdown and minimizing damage from overloads or short circuits. This part carries Allen-Bradley/Rockwell Automation branding and is intended for systems requiring 3P, 480Y/277 VAC protection.