{"product_id":"general-electric-thjk436400ll-circuit-breaker","title":"General Electric | THJK436400LL | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eGeneral Electric THJK436400LL Circuit Breaker — a purpose-built, high-current defender for three-phase 600V applications. This 400A, 3-pole breaker is designed for maintenance, retrofit, and replacement projects where exact GE compatibility matters most, helping maintain safety, reliability, and uptime in demanding electrical environments.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e THJK436400LL\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this GE breaker stands out\u003c\/h3\u003e\n\u003cp\u003eThe THJK436400LL is a genuine GE replacement part, not a generic substitute. It’s engineered to integrate seamlessly with GE panelboards and distribution gear, preserving protective coordination and electrical characteristics specific to GE systems. Using the exact part number minimizes compatibility risk and streamlines procurement for service contractors and facilities teams.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed GE circuit breaker in an existing GE panel with matching rating.\u003c\/li\u003e \u003cli\u003eUpgrading or retrofitting three-phase feeders in 600V systems where a rugged, single-pole protection device is required for each phase.\u003c\/li\u003e \u003cli\u003eMaintaining code-compliant protection in commercial or industrial installations during refurbishments or capacity upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways verify fit against the panel label and GE's part catalog by using the exact part number THJK436400LL.\u003c\/li\u003e \u003cli\u003eConfirm that the system’s voltage and current requirements align with 600V and 400A ratings before purchase.\u003c\/li\u003e \u003cli\u003eFor critical or large-scale installations, involve a licensed electrician to ensure correct protective coordination, wiring terminations, and safety compliance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith its GE-originated design and 3-pole configuration, the THJK436400LL delivers dependable protection for 3-phase circuits at 600 volts, helping facilities keep power systems safe, compliant, and performing at their best.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":46427500282018,"sku":"THJK436400LL","price":6731.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/general-electric-thjk436400ll-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}