{"product_id":"ge-tjk436y400-400a-600v-3-pole-circuit-breaker","title":"GE TJK436Y400 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eGE TJK436Y400 is a robust 400A, 600V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and loadcenters. Its compact footprint optimizes panel space without sacrificing protection performance, making it a practical choice for demanding electrical distributions in residential, commercial, and light industrial environments.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes available space in crowded panels, helping you fit high-capacity protection where it matters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable overload protection with an instantaneous magnetic trip for short circuits, delivering repeatable, predictable protection across a wide range of fault conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible performance\u003c\/strong\u003e engineered to work with matching GE OEM load centers and panelboards, ensuring proper fit, coordinated protection, and reliable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for residential, commercial, and light industrial circuit protection, especially where a three-phase main or feeder breaker is needed.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: GE\u003c\/li\u003e \u003cli\u003ePart Number: TJK436Y400\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 400A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain or feeder protection in three-phase panelboards and load centers for commercial spaces, office buildings, and light industrial facilities.\u003c\/li\u003e \u003cli\u003eReplacement or upgrade in existing GE OEM panels to restore reliable current coordination and short-circuit safeguarding.\u003c\/li\u003e \u003cli\u003eNew installations where a compact, high-capacity breaker is required without expanding panel width.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems this delivers—and how it compares\u003c\/h3\u003e\n\u003cp\u003eStronger protection that combines dependable overload control with fast short-circuit interruption means less downtime and fewer repaired components downstream. The thermal element guards against nuisance trips due to normal heat fluctuations, while the magnetic element responds to high-energy faults, helping protect wiring, components, and connected load. This is a practical alternative to smaller or purely magnetic breakers when a 400A capacity is needed within a compact form factor, ensuring correct trip characteristics and panel coordination.\u003c\/p\u003e \u003ch3\u003ePractical insights for installation and longevity\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm panelboard compatibility with GE OEM frames to ensure proper bus alignment and labeling.\u003c\/li\u003e \u003cli\u003eAdhere to manufacturer torque guidelines for lugs and termination to maintain secure connections and safe operation.\u003c\/li\u003e \u003cli\u003eUse as a reliable main feeder or large branch circuit protector in systems requiring robust fault isolation and rapid recovery once faults are cleared.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for engineers, electricians, and facility managers who demand dependable, long-lasting protection in critical electrical enclosures, the GE TJK436Y400 delivers precise protection where your panels live and work hardest. Add this 400A, 600V, 3-pole molded case circuit breaker to your panel upgrade or replacement project and experience consistent performance across residential, commercial, and light industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349718225058,"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_cd836e78-b1e6-4234-9191-d68be76a139c.png?v=1764154903","url":"https:\/\/www.ampstate.com\/products\/ge-tjk436y400-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}