Schneider Electric QDA221251RP Circuit Breaker

Schneider Electric’s Square D QDA221251RP is a 125-amp, two-pole molded‑case circuit breaker built for 240 VAC power distribution. Part of the PowerPact Q family, it features I‑Line plug‑in mounting for compatible panelboards and switchboards and delivers a 25 kA interrupting rating at 240 V. The unit uses a thermal‑magnetic trip with long‑time and instantaneous trip functions and provides load‑side lug terminals for straightforward wiring. It is UL listed and CSA approved, designed for use in industrial and commercial systems that require reliable protection of 240‑V circuits, with a 50/60 Hz rating typical of standard mains. The 2‑pole design ensures common‑trip operation across both phases, suitable for protecting circuits that share a neutral or require simultaneous disconnection, and it corresponds to Square D’s QDA‑series molded‑case breakers designed for I‑Line panelboards and power distribution installations. With a 125 A rating and 25 kA at 240 V, this breaker confines fault currents effectively, helping safeguard conductors and downstream equipment while delivering predictable response under overload conditions.