Protecting your home or workshop from electrical overloads and short circuits is paramount. Magnetic circuit breakers offer a reliable and responsive solution, tripping quickly to prevent damage. Understanding the key factors involved in selecting the right breaker ensures optimal safety and performance for your electrical system.
Looking for the best Magnetic Circuit Breakers?
Discover now our comparison of the best Magnetic Circuit Breakers. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Magnetic Circuit Breakers are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Magnetic Circuit Breakers in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
Q220 20-Amp Double Pole Type QP Circuit Breaker
- Double pole, 20 Amp, 240V type QP Circuit Breaker
- 10,000 AIC interrupting rating
- Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
- Compatible with Siemens PL and ES series load centers
- Use for overload and short-circuit protection of your electrical system
- Accepts #14-8 AWG AI wire
$16.21
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SaleNo. 2
Siemens Q120 20-Amp Single Pole Type QP Circuit Breaker
- Single pole, 20 Amp, 120V type QP Circuit Breaker
- 10,000 AIC interrupting rating
- Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
- Compatible with Siemens PL and ES series load centers
- Use for overload and short-circuit protection of your electrical system
−41%
$7.78
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SaleNo. 3
Q115 15-Amp Single Pole Type QP Circuit Breaker
- Single pole, 15 Amp, 120V type QP Circuit Breaker
- 10,000 AIC interrupting rating
- Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
- Compatible with Siemens PL and ES series load centers
- Use for overload and short-circuit protection of your electrical system
- Accepts #14-6 AWG Cu or #14-6 AWG Al wire
- Thermal-magnetic
−40%
$7.78
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SaleNo. 4
Leviton LB120-T 20A 1-Pole Plug-On Standard Branch Circuit Breaker, Thermal Magnetic, 120 VAC, White
- EASY - Leviton's revolutionary design allows the entire Load Center to be wired at rough-in without any circuit breakers present.
- INTUITIVE - Color indicators in the handle show operational status at-a-glance
- COMFORTABLE - Rocker-style switches require less activation force than traditional circuit breakers.
−27%
$9.79
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No. 5
FalconSupply Genuine Square D QO120 QO 20 Amp Circuit Breaker Kit (2 Pack), Single Pole, 20A, 120V, 10kAIC...
- AUTHENTIC OEM COMPONENT — This kit is built around two (2) factory-new, unused, and authentic Original Equipment Manufacturer (OEM) Square D QO120 circuit breakers. The QO series is Square D's premium, professional-grade line of circuit protection...
- RELIABLE 20A OVERCURRENT PROTECTION — These UL Listed single-pole breakers provide essential thermal-magnetic protection for standard 20 Amp circuits. They are engineered to safeguard expensive wiring and connected 120V equipment from both sustained...
- EXCLUSIVE VISI-TRIP INDICATOR — Features the signature Square D Visi-Trip indicator, a red flag that appears in a dedicated window on the breaker's face during a trip event. This industry-leading function allows for immediate visual identification of...
- QO SYSTEM COMPATIBILITY & SPECIFICATIONS — Designed with a robust plug-in mount for exclusive use in Square D QO-series load centers, panelboards, and CSEDs (Combined Service Entrance Devices) which feature the shielded copper bus bar system. The box...
- INSTALLATION BUNDLE — This is a value-added package from FalconSupply. The box includes the two (2) genuine QO120 breakers, one (1) individually sealed electronics cleaning wipe for bus bar preparation, and one (1) Pro-Finishing Hardware Pack. Each...
SaleNo. 7
Square D Schneider Electric 20A 1 Pole HO Breaker HOM120C
- RELIABLE CIRCUIT PROTECTION: Designed as a 20 amp breaker single pole for safe and consistent circuit interruption in residential electrical panels. Helps prevent overloads and short circuits.
- EASY PLUG-IN INSTALLATION: Features a plug-in mount for quick and secure installation. Compatible with Homeline breaker panels for hassle-free upgrades or replacements.
- DURABLE COPPER CONSTRUCTION: Built with high-quality copper materials to ensure long-lasting performance and dependable conductivity in demanding home electrical systems.
- COMPACT SPACE-SAVING DESIGN: Measures 5.31 in length, 3.31 in width, and 1.1 in height. Fits easily into standard breaker boxes without taking up unnecessary space.
- IDEAL FOR HOME USE: Rated for 120 V and 20 A, this 20 amp circuit breaker is perfect for protecting circuits in houses, garages, and workshops. No batteries required for operation.
SaleNo. 8
SIEMENS Q230 30-Amp Double Pole Type QP Circuit Breaker
- Double pole, 30 Amp, 240V type QP Circuit Breaker
- 10,000 AIC interrupting rating
- Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
- Compatible with Siemens PL and ES series load centers
- Use for overload and short-circuit protection of your electrical system
−43%
$16.73
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SaleNo. 9
Connecticut Electric UBIP120-New Pushmatic P120 Replacement. One Pole 20 Amp Circuit Breaker, Gray
- Replacement Pushmatic circuit breaker manufactured new by Connecticut Electric
- For use in Pushmatic circuit breaker panels
- Intertek ETL Listing to UL Standard 489 for US and Canada-Molded case circuit breakers
- 10,000 AIC
- 20 Amp.Interruption Type:Standard Trip
- 120 VAC 1 Pole breaker
- Bolt on type
- May also be branded as Bulldog (ie Bulldog P120)
−15%
$31.99
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No. 10
ABB Q-Line THQLT1515 Tandem Circuit Breaker • 15A/1P & 15A/1P Dual Circuit Breaker for Single Slot...
- DUAL CIRCUIT PROTECTION IN ONE – The ABB Q-Line THQLT1515 Tandem Circuit Breaker provides two 15A/1P circuits in a single breaker slot, offering efficient use of panel space and doubling circuit capacity in compact areas.
- COMPATIBLE WITH ABB LOAD CENTERS – Designed for seamless integration, this breaker is compatible with both new and existing single-phase ABB and PowerMark load centers, supporting installations with or without wing stabs.
- 10 KAIC INTERRUPTING CAPACITY – Equipped with a robust 10 kAIC interrupting rating at both 120 V and 240 V, ensuring reliable protection against overcurrents and short circuits in residential electrical systems.
- NON-INTERCHANGEABLE TRIP FUNCTION – Features a fixed long-time and instantaneous trip setting, providing consistent performance and straightforward operation without the need for adjustments.
$14.78
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Last update on 2026-04-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Magnetic Circuit Breakers
Understanding Magnetic Circuit Breaker Types
- Thermal-Magnetic: These are the most common type. They combine a bimetallic strip (for thermal overload protection) and an electromagnet (for short-circuit protection). They are suitable for general-purpose applications.
- Magnetic-Only: These breakers rely solely on an electromagnet to detect and interrupt fault currents. They are often used in applications where rapid tripping is crucial, such as motor protection, as they are less susceptible to nuisance tripping from heat.
Key Specifications to Consider
- Amperage Rating: This indicates the maximum current the breaker can handle continuously. It must be matched to the circuit's expected load and wire gauge. Using a breaker with too high an amperage rating defeats its protective purpose.
- Voltage Rating: Ensure the breaker's voltage rating meets or exceeds the system voltage it will protect. Common ratings include 120V, 240V, and 480V.
- Interrupting Capacity (AIC): This is the maximum fault current the breaker can safely interrupt without damage. It should be higher than the potential short-circuit current at the installation point.
- Number of Poles: Single-pole breakers protect one 120V circuit, double-pole breakers protect two 120V circuits or a single 240V circuit, and triple-pole breakers are used for three-phase power.
Installation and Compatibility
- Ensure the breaker is compatible with your existing electrical panel or enclosure. Check the brand and series for proper fit and function.
- Follow all local electrical codes and manufacturer instructions for safe installation. If you are not experienced with electrical work, consult a qualified electrician.
Frequently Asked Questions
What is the difference between a thermal and a magnetic trip?
A thermal trip uses a bimetallic strip that heats up and bends when current exceeds a safe level for an extended period, protecting against overloads. A magnetic trip uses an electromagnet that reacts instantly to high fault currents, protecting against short circuits.
How do I determine the correct amperage rating for a breaker?
The amperage rating should be chosen based on the continuous current draw of the circuit and the wire gauge used. It should be sized to protect the wiring from overheating, typically matching the wire's capacity.
Can I use a breaker with a higher voltage rating than my system?
Yes, you can use a breaker with a higher voltage rating than your system, but never one with a lower rating. Using a breaker with a lower voltage rating is a safety hazard.
What does interrupting capacity (AIC) mean?
Interrupting capacity (AIC) refers to the maximum fault current a circuit breaker can safely interrupt without sustaining damage. It's crucial to select a breaker with an AIC rating sufficient for the potential fault current at its installation point.
Are magnetic circuit breakers suitable for motor protection?
Yes, magnetic-only breakers are often preferred for motor protection because they react quickly to short circuits without nuisance tripping from the heat generated during normal motor operation.
