Allen-Bradley 1321-3R12-B Transformer

Allen-Bradley 1321-3R12-B is a three-phase line reactor transformer from Rockwell Automation’s 1321 Power Conditioning Products line, designed to condition the supply feeding AC drives and motor systems. It limits harmonic currents and dampens voltage transients on 3‑phase networks, helping smooth power delivery to drives and other equipment. This model is rated for up to 12 A continuous current and a maximum voltage of 600 V, making it suitable for 3‑phase loads powered from medium‑voltage distributions. The unit provides about 2.5 millihenries of inductance (2.5 mH) to attenuate high‑frequency disturbances and improve drive performance and longevity. As part of the 1321 family, it is intended to condition the supply entering Allen‑Bradley drives and related equipment, with installation requiring proper mounting and adherence to applicable safety guidelines to ensure reliable operation.