{"product_id":"siemens-jj62b300-circuit-breaker","title":"Siemens | JJ62B300 | Circuit Breaker | 300A | 2-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens JJ62B300 circuit breaker — a robust, bolt-on, two-pole protection device designed for demanding industrial electrical systems. With a 300-amp rating and a 600-volt maximum, this unit provides reliable overcurrent protection for maintenance, retrofit, or replacement projects where exact specifications matter and OEM compatibility is critical.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e JJ62B300\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens circuit breaker stands out\u003c\/h3\u003e\n\u003cp\u003eAs a genuine Siemens component, the JJ62B300 is engineered to align perfectly with compatible panels and protection schemes. The bolt-on design ensures a secure, vibration-resistant mounting that preserves consistent electrical contact, reducing the risk of loose connections in demanding environments. The two-pole configuration protects two conductors simultaneously, simplifying wiring in compact panel layouts without compromising protection. This unit is specifically suited for projects that require a reliable 300A, 600V solution with true OEM fit.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintenance and service on Siemens-based panels requiring 300A, 2-pole protection\u003c\/li\u003e\n\u003cli\u003eRetrofit upgrades to align with updated electrical protection standards\u003c\/li\u003e\n\u003cli\u003eReplacement for worn or failed breakers in compatible systems\u003c\/li\u003e\n\u003cli\u003eEmergency shutdown protection in industrial facilities with Siemens protection architecture\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and installation notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number JJ62B300 is the best reference for compatibility with your equipment. This is a bolt-on unit designed to mount to compatible Siemens panels or enclosures that accept bolt-on breakers.\u003c\/p\u003e \u003ch3\u003ePractical installation tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAlways disconnect power and follow proper lockout\/tagout procedures before servicing.\u003c\/li\u003e\n\u003cli\u003eConsult your panel's installation instructions for bolt-on mounting torque and sequence to ensure a secure, compliant installation.\u003c\/li\u003e\n\u003cli\u003eInspect the bus bar connection and mounting hardware for signs of wear or damage prior to installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427542225058,"sku":"JJ62B300","price":510.0,"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\/siemens-jj62b300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}