Schneider Electric Q221175AC I-Line Circuit Breaker

Schneider Electric's Square D Q221175AC is a 2-pole I-Line molded‑case circuit breaker rated for 175 A at 240 V, designed for plug‑on mounting in Square D I-Line panelboards. As a member of the Q2-series family, this device provides thermal‑magnetic overcurrent protection for two hot conductors, delivering long‑time and instantaneous trip actions to safeguard feeders and branch circuits in commercial electrical distributions. The gray‑label variant is common in I-Line installations for a compact footprint and straightforward replacement within compatible panels. UL‑listed for standard electrical distribution applications, the Q221175AC is intended for use with compatible Q2 I-Line panels in 120/240 V systems, making it a direct option for protecting two‑pole circuits in residential-adjacent commercial infrastructure or small-to-mid-size commercial installations.