Square D A1B315 3 Pole 15 Amp Circuit Breaker

Square D A1B315 is a three‑pole molded‑case circuit breaker rated for 15 A at 240 VAC, designed for 3‑phase distribution in industrial panels. It is part of Square D's A1B series (Type A1B) and provides thermal‑magnetic protection with long‑time and instantaneous trip functions, offering a 10 kA interrupting capacity at 240 VAC. The device mounts bolt‑on in compatible enclosures, ensuring secure installation in control panels. This MCCB protects 3‑phase circuits up to 15 A from overloads and short circuits, and its rugged construction suits industrial distribution and equipment protection. Note that A1B315 belongs to an older A1B family; while some suppliers still stock this model, the A1B series is considered obsolete by many catalogs.