Square D | A1L170 | Circuit Breaker | 1-Pole | 120V

Meet the Square D A1L170 circuit breaker—the compact, reliable 1-pole protective device designed for 120V circuits in residential and light commercial panels. This unit is specifically identified by part number A1L170, making it the clear choice for maintenance, retrofit, and replacement projects where exact specifications matter.

Key fit and compatibility you can trust

• Pole count: 1-Pole – protects a single circuit branch.
• Voltage rating: 120V – suitable for standard residential circuits.
• Best reference for compatibility: The part number A1L170 is your primary cross-check.

Before ordering, verify fit and ratings against your panel's labeling. While the A1L170 is designed to align with Square D specifications, panel catalogs and labeling confirm exact compatibility for your setup.

Why this 1-pole 120V breaker stands out

• Direct replacement mindset: When your panel calls for A1L170, this breaker slots in to restore overcurrent protection with minimal downtime.
• Maintenance-friendly: Ideal for routine service of single-circuit feeds, backyard spa circuits, lighting circuits, and outlets that require reliable protection.
• Retrofit-ready: If you're upgrading an older panel or replacing a failed unit, this 1-pole 120V unit keeps your wiring configuration intact.

Practical use cases

Typical applications include lighting circuits in kitchens and living spaces, small-appliance branch circuits, and other single-load protections within a Square D panel. This breaker is designed to serve as a dependable, quick-replace option when exact A1L170 specification is essential.

How to install and care for your breaker

• Power off at the main disconnect and verify absence of voltage before handling any panel components.
• Remove the old breaker, align with the panel bus, and click the A1L170 into place following the panel’s manual.
• Label the circuit after installation and test the circuit for proper operation.

Simple, precise, and purpose-built for Square D panels, the A1L170 1-Pole 120V circuit breaker helps you maintain safe, reliable electrical protection with confidence. If your project hinges on exact part identification, remember: the part number is the best reference for compatibility, and this unit is ready to support your maintenance, retrofit, or replacement needs.