{"product_id":"general-electrics-thjk636400-400a-3-pole-bolt-on-circuit-breaker","title":"General Electrics THJK636400 - 400 A, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electrics THJK636400 is a robust 400 A, 3-pole bolt-on molded case circuit breaker designed to guard panelboards and loadcenters from overcurrent and short circuits. Built for demanding electrical environments, this breaker delivers reliable protection where three-phase power distribution matters most.\u003c\/p\u003e \u003ch3\u003eKey benefits that matter in the field\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the bus, reducing the risk of loosening that can compromise protection and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining a thermal overload element with a magnetic short-circuit mechanism for fast, decisive interruption when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is crafted to fit matching GE panelboards and loadcenters, ensuring proper fit, coordination, and reliable operation within existing electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e is ideal for 3-phase applications, delivering coordinated protection across all phases in commercial and light industrial setups.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential, commercial, and light industrial panelboards and loadcenters requiring dependable three-phase protection\u003c\/li\u003e \u003cli\u003eBranch circuit protection for feeders and distribution circuits where a 400 A rating is appropriate\u003c\/li\u003e \u003cli\u003eReplacement or upgrade within GE-compatible equipment to maintain system coordination and protection\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 THJK636400\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 400 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 Bolt-on\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\u003eWhy this matters for you\u003c\/h3\u003e\n\u003cp\u003eWhen you’re configuring a panel for reliable power distribution, the THJK636400 offers more than just protection—it's a durable, installation-friendly solution that aligns with GE’s panel ecosystems. The bolt-on design simplifies mounting and bus connections, while the thermal-magnetic trip mechanism provides predictable behavior under overloads and fast disconnection during faults. This means fewer unexpected trips, quicker fault clearance, and safer, more stable operation for critical loads in homes, offices, and light industrial facilities.\u003c\/p\u003e \u003ch3\u003eInstallation and maintenance tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eInstall in accordance with local electrical codes and GE installation guidelines to ensure proper fit and performance.\u003c\/li\u003e \u003cli\u003eEnsure the bus connection is clean and undamaged before mounting; use the designated bolt-on hardware to achieve a solid, vibration-resistant bond.\u003c\/li\u003e \u003cli\u003ePeriodically inspect for signs of overheating or discoloration around the breaker and panel connections; address any issues promptly to maintain protection integrity.\u003c\/li\u003e \u003cli\u003ePair this 400 A, 3-pole unit with compatible GE panels to maintain proper coordination with upstream protective devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its combination of secure mounting, reliable thermal-magnetic protection, and OEM compatibility, the General Electrics THJK636400 is a purpose-built choice for safeguarding critical circuits in a wide range of residential, commercial, and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349730283682,"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-thjk636400-400-a-3-pole-bolt-on-circuit-breaker-598.webp?v=1788717718","url":"https:\/\/www.ampstate.com\/products\/general-electrics-thjk636400-400a-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}