{"product_id":"general-electric-mb423-circuit-breaker","title":"General Electric | MB423 | Circuit Breaker | 3-Pole | 480V | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electric MB423 three-pole 480V plug-in circuit breaker is a purpose-built OEM replacement designed for fast, reliable maintenance, retrofit, and replacement in compatible GE panels. If your service requires exact electrical characteristics and a seamless fit, the MB423 delivers the precision GE users rely on for continued protection of three-phase electrical systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey design and installation advantages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole configuration\u003c\/strong\u003e tailored for standard three-phase circuits common in industrial and commercial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480V rating\u003c\/strong\u003e aligns with many heavy-duty power distribution setups, helping protect equipment and personnel in demanding applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-In format\u003c\/strong\u003e enables quicker swaps and minimizes downtime during maintenance or retrofits compared with more cumbersome mounting styles.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM reference\u003c\/strong\u003e MB423 is the definitive part number for compatibility, reducing guesswork during procurement and installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile use cases\u003c\/strong\u003e ideal for maintenance, retrofit projects, and straightforward replacements where matching specs are required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility guidance\u003c\/strong\u003e Always confirm fit and ratings before ordering; using the MB423 part number as your primary reference helps ensure a correct, safe match for your GE panel.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits from the MB423\u003c\/h3\u003e\n\u003cp\u003eFacilities and teams maintaining GE electrical systems, electrical contractors upgrading GE panels, and maintenance engineers handling replacements in three-phase 480V environments will find the MB423 to be a precise, drop-in solution that keeps downtime to a minimum and protects critical infrastructure.\u003c\/p\u003e \u003ch3\u003ePractical guidance for use and installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, verify that your panel requires a 3-pole, 480V plug-in breaker and that MB423 is the correct reference for your GE equipment.\u003c\/li\u003e \u003cli\u003ePower down the circuit and follow proper lockout\/tagout procedures before removing or installing the breaker.\u003c\/li\u003e \u003cli\u003eRemove the existing breaker and insert the MB423 into the same plug-in slots, ensuring a firm, secure connection.\u003c\/li\u003e \u003cli\u003eAfter installation, restore power and test the protected circuit to confirm proper operation and tripping behavior in line with your panel’s specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the MB423, you’re choosing a trusted GE component designed to deliver reliable performance in demanding 480V, three-phase environments. Its plug-in convenience, exact compatibility, and clear reference for procurement make it a practical choice for professional maintenance and retrofits where precision matters.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":46426872873122,"sku":"MB423","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/general-electric-mb423-circuit-breaker-3-pole-480v-plug-196.webp?v=1789634016","url":"https:\/\/www.ampstate.com\/products\/general-electric-mb423-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}