{"product_id":"siemens-j3b125","title":"Siemens J3B125 125A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens J3B125 125A 3-Pole 600 V Circuit Breaker is a robust protection solution designed for three-phase electrical systems. With a 125-amp rating, three poles, and a maximum 600 V capacity, this breaker provides reliable overcurrent protection for feeders, motors, and distribution circuits in commercial and light industrial environments.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\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 J3B125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cp\u003eThe 3-pole design ensures synchronized protection across all three phases, reducing the risk of unbalanced loads and phase faults that can damage motors and equipment. This configuration is ideal for three-phase motor circuits and multi-branch feeders, delivering consistent protection where single-pole breakers fall short.\u003c\/p\u003e \u003ch3\u003eIdeal uses\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree-phase motor control circuits up to 125 A\u003c\/li\u003e \u003cli\u003eCommercial and light-industrial power distribution panels\u003c\/li\u003e \u003cli\u003e feeders and equipment protection in systems that operate at up to 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical considerations\u003c\/h3\u003e\n\u003cp\u003eReplace like-for-like in compatible Siemens panels to maintain system compatibility and predictable performance. When installing, ensure the surrounding enclosure and wiring are rated for 600 V and that all connections are tightened to the manufacturer’s specifications. This J3B125 breaker helps minimize downtime by providing dependable, straightforward protection for critical three-phase loads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423725965474,"sku":"J3B125","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-j3b125","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}