Square D | A1220 | Circuit Breaker | 2-Pole | 240V

The Square D A1220 2-Pole 240V Circuit Breaker is a purpose-built protective device designed for maintenance, retrofit, and replacement projects. As a genuine Square D component, it’s engineered to deliver reliable interruption and safe operation when installed in compatible panels and load centers that accept two-pole 240V breakers.

Key details at a glance

• Poles: 2-Pole
• Voltage rating: 240V
• Part number: A1220 — the best reference for compatibility
• Ideal for maintenance, retrofit, and replacement applications

Why this 2-pole 240V breaker matters

Two-pole breakers are essential for safeguarding 240-volt circuits that power equipment and appliances requiring both legs of a split-phase supply. The A1220 is designed to trip when an overcurrent is detected, protecting wiring insulation, preventing overheating, and reducing the risk of electrical fires. Whether you’re upgrading an aging panel, retrofitting a system to meet current codes, or simply replacing a faulty breaker, this model provides a reliable, drop-in solution when the fit is confirmed.

Who it’s ideal for

• Electrical installers and technicians performing panel retrofits or replacements
• Homeowners tackling 240V circuit protection in updated or expanding electrical systems
• Maintenance teams seeking genuine Square D replacements to maintain panel labeling and consistency

What problems it solves

• Ensures consistent protection for 240V circuits, reducing the risk of wiring damage from overcurrent
• Provides a straightforward, compatible replacement path when upgrading or repairing panels
• Maintains panel labeling and identification through a trusted part number reference

Important compatibility notes

Before ordering, confirm fit and ratings for your specific panel or load center. The part number A1220 is the best reference for compatibility, helping you avoid mismatches in pole configuration or voltage. If you have a panel that accepts a 2-pole 240V breaker, this model offers a practical, OEM-backed option to maintain system integrity.

Installation considerations and tips

• Always follow proper lockout/tagout procedures and verify power is removed before working near the panel.
• Verify that the panel accepts a 2-pole 240V breaker and that the amperage rating aligns with your circuit requirements.
• Check labeling and documentation in your panel to ensure compatibility and safe operation after replacement.
• Use the A1220 specifically when the panel specification references this part number as the correct fit.

Why choose a genuine Square D component

Choosing a genuine Square D breaker like the A1220 helps ensure consistent electrical performance, predictable trip characteristics, and streamlined warranty support. It’s a dependable option when you’re protecting critical 240V circuits—whether for home improvements, small commercial projects, or service calls where compatibility and reliability matter most.