{"product_id":"rjl3s400-circuit-breaker","title":"RJL3S400 | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for demanding industrial environments, the RJL3S400 400A, 3-Pole, 600V circuit breaker delivers dependable overcurrent protection for today’s power-hungry equipment. Whether you’re performing routine maintenance, upgrading legacy panels, or completing a replacement, this unit is purpose-built to drop into standard 3-phase installations with precision and trust.\u003c\/p\u003e \u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400A protection\u003c\/strong\u003e optimizes safety for main feeds and distribution circuits in heavy-duty panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole design\u003c\/strong\u003e ensures synchronized disconnection across all three phases, helping prevent unbalanced faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V rated\u003c\/strong\u003e compatibility with common industrial electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-and-play replacement compatibility\u003c\/strong\u003e and clear reference in the part number RJL3S400 to streamline ordering and cross-reference checks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for maintenance, retrofit, and replacement\u003c\/strong\u003e workflows to minimize downtime and keep systems running smoothly.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider this circuit breaker?\u003c\/h3\u003e\n\u003cp\u003ePlant engineers, maintenance technicians, and panel builders working with 3‑phase industrial equipment will appreciate a reliable, surface-compatible solution for modernizing electrical infrastructure or keeping critical lines protected during upgrades.\u003c\/p\u003e \u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance on three-phase motors, conveyors, or robotics in manufacturing facilities.\u003c\/li\u003e \u003cli\u003eRetrofit of older panels to align with 600V system requirements without redesigning protection schemes.\u003c\/li\u003e \u003cli\u003eReplacement in service panels where a 400A, 3-Pole, 600V breaker is the correct match for existing wiring and feeders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and installation tips\u003c\/h3\u003e\n\u003cp\u003eTo ensure a successful match, verify the following before ordering:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: \u003cstrong\u003e400A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3-Pole\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage rating: \u003cstrong\u003e600V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePrimary reference: \u003cstrong\u003eRJL3S400\u003c\/strong\u003e for compatibility with your panel and accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInstallation should be performed by qualified personnel with the power shut off and panels de-energized. Confirm labeling and wiring diagrams in the panel are consistent with a 3‑pole, 600V protection scheme. Keep spare units organized with clear part-number documentation to simplify future replacements.\u003c\/p\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eChoosing the RJL3S400 means selecting a purpose-built, industry-standard solution designed to integrate smoothly into existing 3‑phase systems. It supports efficient maintenance cycles, reduces the risk of mismatched components during retrofit projects, and helps ensure that protective coordination remains intact across your distribution network.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: \u003cstrong\u003e400A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3-Pole\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage: \u003cstrong\u003e600V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart number reference: \u003cstrong\u003eRJL3S400\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426331807906,"sku":"RJL3S400","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/rjl3s400-circuit-breaker-400a-3-pole-600v-486.webp?v=1789558908","url":"https:\/\/www.ampstate.com\/products\/rjl3s400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}