{"product_id":"general-electrics-thkma836400-400a-3-pole-bolt-on-circuit-breaker","title":"General Electrics THKMA836400 - 400 A, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Electrics THKMA836400\u003c\/strong\u003e is a 400A, 3-pole bolt-on molded case circuit breaker engineered for dependable branch-circuit protection in panelboards and loadcenters. This unit is built to handle demanding circuits in a way that keeps electrical systems safe and responsive.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e delivers a rigid, vibration-resistant bus connection. In environments with frequent equipment activity or mechanical vibration, this mounting design maintains consistent electrical contact and reduces the risk of loose connections that can lead to faults or nuisance trips.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection across varying temperatures and loading conditions. The combination of thermal (overload) and magnetic (short-circuit) sensing helps prevent unnecessary trips while delivering rapid response to dangerous fault currents—helping protect wiring, devices, and downstream equipment.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e is designed to fit matching General Electrics OEM loadcenters and panelboards, ensuring a reliable fit and predictable performance when you’re expanding or upgrading an existing installation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e include residential, commercial, and light industrial environments where three-phase protection and robust branch-circuit safeguarding are essential. It’s well-suited for feeders and main distribution paths in service panels, equipment rooms, and low-\/mid-rise facilities.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage rating: \u003cstrong\u003e400A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eMounting style: \u003cstrong\u003eBolt-on\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eType: \u003cstrong\u003eThermal-magnetic molded case circuit breaker\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart number: \u003cstrong\u003eTHKMA836400\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the THKMA836400 in your panel\u003c\/h3\u003e\n\u003cp\u003eWhen your installation demands reliable three-phase protection with a solid mechanical connection, this bolt-on breaker delivers. The 3-pole design ensures synchronized switching across all phases, which is especially important in commercial and light-industrial panels where even a small mismatch can affect equipment performance. By pairing the THKMA836400 with the appropriate GE loadcenter or panelboard, you gain a cohesive protection scheme that reduces integration friction and supports long-term serviceability.\u003c\/p\u003e \u003ch3\u003eUse-case scenarios and practical tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading a service panel in a small commercial building that requires a strong 400A three-phase protection path for feeders and main distribution circuits.\u003c\/li\u003e \u003cli\u003eExpanding a residential or light-industrial panel where a dedicated 400A protection path is needed for high-load equipment or large motors connected through a three-pole circuit.\u003c\/li\u003e \u003cli\u003eReplacing aging or incompatible breakers in compatible GE panelboards to restore reliable fault protection without altering downstream wiring.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing a breaker with a secure bolt-on mount, a thermal-magnetic trip unit, and OEM compatibility helps you build a safer, more reliable electrical backbone. The THKMA836400 is purpose-built for dependable protection where it matters most—configurable, robust, and ready to integrate with GE loadcenters and panelboards.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349730709666,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/general-electrics-thkma836400-400-a-3-pole-bolt-on-circuit-breaker-704.webp?v=1788717823","url":"https:\/\/www.ampstate.com\/products\/general-electrics-thkma836400-400a-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}