Square D | A1B380 | Circuit Breaker | 80A | 3-Pole | 240V

Meet the Square D A1B380 Circuit Breaker — a purpose-built protection solution for 240V systems that demands reliable, three-pole performance. With an 80A rating, this breaker is engineered to handle higher-load applications while preserving safety and system integrity.

Designed for maintenance, retrofit, and replacement projects where exact specifications matter, the A1B380 ensures you’re pairing with the right equipment from the start. The part number A1B380 is the most trusted reference for compatibility, helping you avoid mismatches and streamline replacement workflows.

• Amperage: 80A
• Poles: 3-Pole
• Voltage: 240V
• Reference: A1B380 for precise compatibility checks
• Best use cases: maintenance, retrofit, and replacement in 240V, three-pole setups
• Fit guidance: always verify panel compatibility by matching the A1B380 part number with your equipment’s specifications

Ideal scenarios include upgrading commercial or light-industrial panels that rely on solid, three-pole 240V protection, replacing a failed breaker in a service panel, or retrofitting existing circuits to meet updated safety and performance standards. By choosing the exact A1B380 reference, you minimize guesswork and reduce downtime associated with incorrect substitutions.

• Use-case examples: routine maintenance in commercial panels, circuit upgrades for demanding loads, and replacement of aging 240V protection devices in multi-phase installations
• Who benefits most: facility managers, electricians performing panel retrofits, and technicians safeguarding critical equipment

Practical installation considerations help ensure a smooth swap. Power down the panel and follow standard lockout/tagout procedures, then verify that your panel model and bus design are compatible with the A1B380. Confirm that the breaker’s protection rating aligns with the connected loads to maintain proper overcurrent protection and system safety.

In short, the Square D A1B380 Circuit Breaker delivers dependable 80A, 3-Pole protection for 240V circuits, crafted to support maintenance, retrofit, and replacement projects where exact specifications matter. If your goal is a precise, reliable replacement that matches your existing Square D setup, the A1B380 is the clear, actionable choice.