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Top rated magnetic circuit breakers

AI-generated summary · updated July 27, 2026 · verify details before purchase.

  1. Best overall

    Square D QO 20 Amp Single-Pole Bolt-On Circuit Breaker QO120CP

    4.7/5 $5-$15

    High-quality magnetic-trip circuit breaker from a trusted brand, ideal for residential load centers, with excellent durability and reliable protection.

    • Trusted brand
    • Reliable magnetic trip
    • Easy to install
    • Limited amp options for some
  2. Best for Eaton panels

    Eaton CH Series 20 Amp 1-Pole Circuit Breaker CH120

    4.6/5 $8-$20

    High-performance magnetic circuit breaker compatible with Eaton CH load centers, known for robust construction and positive switching.

    • Solid build
    • Positive switching
    • Widely compatible
    • Only for Eaton panels
  3. Best value

    Siemens Q120 20 Amp Single-Pole Type QP Circuit Breaker

    4.5/5 $6-$18

    Affordable and reliable magnetic circuit breaker for Siemens and compatible panels, offering standard protection with a good price-to-performance ratio.

    • Affordable
    • Good performance
    • Easy installation
    • Plastic housing feels less premium
  4. Best budget pick

    GE THQL1120 20 Amp 1-Pole Circuit Breaker

    4.4/5 $4-$12

    Economical magnetic circuit breaker for GE load centers, providing dependable overload and short-circuit protection at a low cost.

    • Very affordable
    • Dependable
    • Widely available
    • Basic design
    • Not for heavy-duty use
  5. Best for Murray panels

    Murray MP120 20 Amp Single-Pole Circuit Breaker

    4.3/5 $5-$14

    Reliable magnetic circuit breaker specifically designed for Murray load centers, offering consistent performance and easy snap-in installation.

    • Snap-in design
    • Consistent trip
    • Good value
    • Limited to Murray panels
  6. Best for Homeline panels

    Square D Homeline 20 Amp Single-Pole Circuit Breaker HOM120CP

    4.6/5 $6-$16

    Popular magnetic circuit breaker for Square D Homeline load centers, featuring a patented trip mechanism and high short-circuit current rating.

    • Patented trip
    • High SCCR
    • Easy to install
    • Only for Homeline panels
  7. Best for BR panels

    Eaton BR 20 Amp 1-Pole Circuit Breaker BR120

    4.5/5 $6-$19

    Versatile magnetic circuit breaker for Eaton BR and Westinghouse style panels, known for its compact size and reliable protection.

    • Compact size
    • Versatile compatibility
    • Reliable
    • Some reports of false trips
  8. Best for obsolete panels

    Connecticut Electric VPKUBIP 20 Amp Single-Pole Circuit Breaker

    4.2/5 $10-$25

    Aftermarket magnetic circuit breaker designed to fit obsolete load centers like Pushmatic, providing a solution for older electrical systems.

    • Fits obsolete panels
    • Lifesaver for old homes
    • Decent quality
    • Aftermarket brand
    • Higher price

Buying advice

When choosing a magnetic circuit breaker, ensure it matches your panel brand and model. Check the amperage rating (usually 15-20A for general circuits) and voltage compatibility (typically 120/240V). Look for UL listing for safety. For older homes with outdated panels, consider aftermarket options like Connecticut Electric. Always consult a licensed electrician if unsure.

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