A UL 489-rated 10A thermal breaker built for compact spaces and dependable panel protection.
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FMX MCB4-L40-2P-D10 Mini Circuit Breaker – Compact 10A 2-Pole Protection
If you're looking to protect a low-amperage circuit in a space-constrained panel, the FMX MCB4-L40-2P-D10 delivers exactly what’s needed. Rated at 10 amps and certified under UL 489, it provides dependable overcurrent protection with a 2-pole format. Its “mini” form factor allows for flexible layout options—ideal for small residential or commercial enclosures where space matters. And with thermal trip operation, it helps prevent overload damage without complex configuration.
Why It’s Trending
- ✅ UL 489 Certified – Meets rigorous U.S. safety standards for branch circuit protection
- 🧩 Compact 2-Pole Layout – Helps conserve space in tight breaker panels
- 🔥 Thermal Overload Trip – Protects circuits by interrupting excess current automatically
- 🔌 Dual-Pole Configuration – Supports applications requiring two-line interruption (voltage not specified)
- 🛠️ Versatile Integration – Designed for use in a variety of small-scale electrical setups
Best for...
- 🏠 Best for tight-space breaker panels
- ⚙️ Best for low-amp protection in small-scale builds
- 🔧 Best for dual-pole safety in enclosed setups
This FMX thermal breaker offers a compact, standards-compliant solution when space is at a premium. It’s well-suited for adding reliable protection in distribution panels, modular enclosures, or backup power systems—just be sure to confirm mounting style and voltage rating before purchase, as those details are not specified in the listing.
FAQs
Is this breaker UL listed?
Yes, it's UL 489 certified, which is required for many residential and commercial branch circuit applications in the U.S.
Does it mount on a DIN rail?
The listing does not specify the mounting type. While many miniature breakers do, you should verify with the manufacturer before assuming DIN compatibility.
Is this breaker resettable?
The reset method is not listed. As it is a thermal breaker, it likely requires manual resetting, but this should be confirmed with the supplier or installation guide.
What voltage is this rated for?
The listing includes a 10A current rating and 2-pole design, but no voltage specification is provided. Always confirm voltage requirements before wiring.
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Updated: July 27, 2025
Disclaimer: CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED "AS IS" AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME. Some links on our website are affiliate links. Please note that we may earn commissions through affiliate links. As an Amazon Associate I earn from qualifying purchases. For more information about our content and participation in affiliate programs, please see our Terms of Use.