Square D | SFA1100A | Circuit Breaker | 1-Pole | 240V

Meet the Square D SFA1100A circuit breaker — a precise, drop-in 1-pole protection device designed for 240V circuits. Built for maintenance, retrofit, and replacement projects, this breaker delivers dependable overcurrent protection with a compact, reliable footprint.

Why this exact part matters
The SFA1100A is identified by its part number, and that reference is the best way to guarantee compatibility with your Square D panel. Before ordering, confirm fit and ratings to ensure the device matches your panel’s specifications and the wiring setup you’re working with.

• 1-Pole, 240V protection: Ideal for single-pole protection of 240V circuits, providing reliable limits on overcurrent events in a streamlined package.
• Maintenance, retrofit, replacement ready: Perfect for refreshing aging installations, upgrading components in existing panels, or swapping a failed breaker without extensive rework.
• Exact-match part reference: Rely on the SFA1100A part number to verify compatibility; always cross-check with panel labeling and manufacturer specs.
• Practical, safe installation: Follow standard safety practices — power down the system, use proper terminals, and torque per manufacturer guidelines to ensure a secure, long-lasting connection.

Designed for reliability in residential, commercial, and light-industrial applications where Square D devices are specified, this breaker helps you maintain consistent protection for critical circuits. It’s the go-to choice when you need a trustworthy, compatible replacement that aligns with your existing electrical architecture and maintenance schedules.

Use cases and scenarios
- Replacing a failed 240V single-pole breaker in a Square D panel without modifying the panel enclosure
- Retrofitting an older installation to restore proper overcurrent protection on 240V circuits
- Standardizing parts inventory with a verified, exact-match reference to minimize compatibility issues