Square D QO320VH U Molded Case Circuit Breaker

Square D by Schneider Electric QO320VH three‑pole molded‑case circuit breaker is a 20 A, 120/240 V AC device designed for use in QO load centers and panelboards to protect three‑phase distribution circuits. This plug‑in breaker carries a 22 kA interrupting rating at 120/240 V, providing robust short‑circuit protection, and it belongs to the QO family, known for compact form, thermal‑magnetic trip operation, and quick replacement in compatible panels. Typical applications include protecting 3‑phase feeders and branch circuits in commercial installations and small equipment circuits in both residential and light commercial environments where 3‑pole protection is required. The QO320VH is listed for plug‑in mounting in compatible Square D panels and mirrors common industry practice for QO‑series devices, ensuring reliable coordination with other protection devices in the same panel lineup.