{"product_id":"general-electrics-mb423-100a-3-pole-plug-in-circuit-breaker","title":"General Electrics MB423 - 100 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electrics MB423 is a dependable 100 A, 3-pole plug-in molded case circuit breaker designed to shield your panelboard or loadcenter from overcurrent and short-circuit events. Built for fast, secure installation and consistent protection, this unit is a smart choice for residential, commercial, and light industrial electrical environments where reliability matters.\u003c\/p\u003e \u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e enables quick installation and effortless replacement, reducing downtime during panel upgrades or fault repairs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance across varying fault currents, helping to minimize nuisance tripping while safeguarding conductors and devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e designed to pair with matching General Electrics OEM loadcenters and panelboards for a seamless, code-compliant fit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for branch circuit overcurrent and short-circuit protection in a wide range of building types and configurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e General Electrics\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MB423\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 100 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal Use Scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential subpanels needing reliable 3-pole protection for three-phase or multi-wire branch circuits\u003c\/li\u003e \u003cli\u003eCommercial lighting, HVAC, and small motor circuits where quick replacement and solid trip performance matter\u003c\/li\u003e \u003cli\u003eLight industrial panels requiring robust plug-in protection that harmonizes with existing OEM panelboards\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility \u0026amp; Installation Guidance\u003c\/h3\u003e\n\u003cp\u003eThis MB423 is engineered to work with matching General Electrics panelboards and loadcenters. When replacing an existing device, confirm the class and frame size align with the surrounding protection scheme and that the trip characteristics match your system’s fault-current profile. For best results, install with power removed, ensure secure seating in the bus and mounting contacts, and follow manufacturer guidelines for torque and testing after installation.\u003c\/p\u003e \u003ch3\u003ePractical Insights\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUse MB423 in circuits where a clear, dependable 100 A protection point is required without complicating the panel’s architecture.\u003c\/li\u003e \u003cli\u003eConsider coordination with upstream protection to minimize disruption during faults and optimize selective tripping.\u003c\/li\u003e \u003cli\u003eStore and inventory a like-for-like replacement to expedite maintenance and minimize panel downtime when service is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349722222754,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/general_electric_breaker_and_panel_23de81a4-3924-4034-bb35-1db9db49c9fd.png?v=1764155064","url":"https:\/\/www.ampstate.com\/products\/general-electrics-mb423-100a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}