{"product_id":"siemens-jd63m300-circuit-breaker","title":"Siemens | JD63M300 | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JD63M300 Circuit Breaker—a robust, bolt-on protection device built for demanding industrial panels. With a three-pole design, it safeguards three-phase power systems while delivering reliable overcurrent interruption when it matters most.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 300 A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-On\u003c\/li\u003e \u003cli\u003ePart reference: JD63M300\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this JD63M300 matters for your setup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility for Siemens JD63 frames:\u003c\/strong\u003e Using the JD63M300 guarantees alignment with the intended panel architecture and field wiring, reducing guesswork during maintenance or retrofit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStrong, three-phase protection:\u003c\/strong\u003e The 3-pole design provides coordinated interruption across all phases, crucial for motors, drives, and distribution circuits common in industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V class suitability:\u003c\/strong\u003e Designed for common industrial and commercial applications, ensuring reliable performance in higher-voltage distribution tasks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On reliability:\u003c\/strong\u003e The bolt-on mounting delivers a secure, durable connection that stands up to vibrations and rugged panel conditions often found in service rooms and factories.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and replacement in existing Siemens JD63-based panels where exact spec matching is required.\u003c\/li\u003e \u003cli\u003eRetrofit projects upgrading old protection devices to meet current safety and performance standards.\u003c\/li\u003e \u003cli\u003eProtection for three-phase motors, conveyors, pumps, and other industrial equipment in panel boards and switchgear assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHow this breaker solves common problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEliminates guesswork during replacements by aligning with the JD63M300 part number, ensuring compatibility and predictable performance.\u003c\/li\u003e \u003cli\u003eProvides dependable three-phase protection at 600 V for demanding equipment, helping prevent unplanned downtime from overcurrent events.\u003c\/li\u003e \u003cli\u003eOffers a straightforward bolt-on installation, enabling faster field service and less panel downtime when replacing aging devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBefore ordering, confirm fit and ratings to match your specific panel configuration—the JD63M300 part number remains the best reference for compatibility. If your system uses a Siemens JD63 frame and requires a 300 A, 3-Pole, 600 V bolt-on circuit breaker, this unit is designed to meet those precise specifications and keep your electrical distribution protected and compliant.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427066695842,"sku":"JD63M300","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-jd63m300-circuit-breaker-300a-3-pole-600v-bolt-489.webp?v=1789666659","url":"https:\/\/www.ampstate.com\/products\/siemens-jd63m300-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}