Square D Q2L3125 125 Amp 240 Volt 3 Pole Circuit Breaker

Square D Q2L3125 is a 125 A, 240 V, three-pole molded‑case circuit breaker from the Q2L family. This thermal‑magnetic device provides a 10 kA interrupt rating at 240 V and is designed for feed‑through mounting with line and load side lug terminals. It features long‑time and instantaneous trip characteristics with a non‑interchangeable trip and is UL‑listed for use in industrial panels and distribution feeders that require three‑phase protection. The Q2L3125 is commonly found in legacy installations; while some suppliers describe the model as obsolete, it remains stocked by certain distributors for replacement in older systems.