Schneider Electric PQ4203AK Three Phase Fusible Bus Plug

Schneider Electric PQ4203AK is a three‑phase fusible plug‑in unit for I‑Line busway systems, delivering protected power at a 30 A, 240 V rating in a compact inline format. Part of the Square D PQ family, this plug‑in bus plug is designed to install directly into an I‑Line busway run to provide fused protection for a dedicated feeder without requiring a separate switchgear section. The unit supports three‑phase service and is intended for industrial distribution environments where modular, plug‑in protection is desirable for downstream equipment. Its fusible construction enables localized overcurrent protection within the busway network, and it is compatible with Schneider Electric’s PQ plug‑in ecosystem to extend power distribution on active busways. Typical applications include feeding individual machines, conveyors, panels, or other industrial loads from an I‑Line busway where quick, reliable disconnection and protection are required. In Schneider Electric’s PQ lineup, PQ4203AK represents a certified means to add fuse protection in a three‑phase busway installation, helping maintain organized, scalable power distribution in manufacturing facilities, data centers, or processing plants that rely on plug‑in protection for modularity and serviceability.