{"product_id":"siemens-jk3b125","title":"Siemens JK3B125 125A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens JK3B125, a purpose-built three-pole circuit breaker engineered for reliable protection in demanding 3‑phase electrical systems. With a 125 A current rating and a 600 V maximum operating voltage, this unit is crafted to safeguard commercial and light industrial panelboards, motors, and distribution networks from overcurrent and short-circuit events. The exact part number is JK3B125, ensuring precise compatibility with Siemens panels that use the JK-series lineup.\u003c\/p\u003e \u003ch2\u003eKey specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\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 JK3B125\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy the JK3B125 stands out\u003c\/h2\u003e\n\u003cp\u003eDesigned for three-phase protection, this 3‑pole breaker ensures balanced interrupting across all phases, reducing the risk of miscoordination and nuisance trips. Its 600 V rating makes it suitable for industrial environments where higher voltage distribution is common, providing robust protection for equipment such as motors, drives, and control panels. By using the JK3B125, you maintain a seamless fit with existing Siemens infrastructure, preserving terminal layouts and mounting compatibility essential for quick replacements or upgrades.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eThree-phase distribution panels in manufacturing facilities and warehouses\u003c\/li\u003e \u003cli\u003eMotor control centers and machine enclosures requiring reliable phase protection\u003c\/li\u003e \u003cli\u003eMain disconnects or branch protection within industrial electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical considerations\u003c\/h2\u003e\n\u003cp\u003eBefore installation, verify that your panel supports JK-series 3‑pole breakers and that the JK3B125 is the correct replacement or upgrade for your system. Follow appropriate safety practices during installation and ensure proper mounting and secure connections to maintain dependable performance over time.\u003c\/p\u003e \u003cp\u003eEngineered for durability and dependable protection, the Siemens JK3B125 125A 3-Pole 600 V Circuit Breaker delivers precise, reliable performance when you need solid overcurrent protection in three-phase power networks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423250763938,"sku":"JK3B125","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-jk3b125","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}