{"product_id":"siemens-jk3b090","title":"Siemens JK3B090 90A 3-Pole 240 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens JK3B090 90A 3-Pole 240 V Circuit Breaker is a purpose-built safety device for demanding 3-phase electrical systems. With a 90-amp rating and 240-volt capability, this unit provides reliable, coordinated protection for larger loads in commercial and light-industrial panels. Identified by part number JK3B090, it’s designed to work seamlessly within Siemens’ JK-series, delivering dependable performance you can trust when it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 240 V protection:\u003c\/strong\u003e simultaneously disconnects all three hot conductors in a 3-phase circuit when an overload or fault occurs, helping prevent uneven phase loading and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current handling for sizable loads:\u003c\/strong\u003e 90 A rating suits motors, compressors, conveyors, and other high-demand equipment while maintaining fast fault interruption when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for Siemens panels:\u003c\/strong\u003e compatible with panels and distribution boards that accept JK-series breakers, enabling straightforward replacement and consistent performance with other Siemens components.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEasy installation and serviceability:\u003c\/strong\u003e compact, standard mounting in compatible enclosures simplifies wiring, testing, and future maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear part identification for maintenance:\u003c\/strong\u003e JK3B090 designation makes ordering, stocking, and referencing in documentation straightforward and error-free.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e: install this breaker in commercial or light-industrial environments where a 3-phase, 240 V supply feeds heavy equipment or multiple feeders. It’s well-suited for protecting motor circuits, HVAC equipment, and large power distribution runs where reliable tripping behavior and phase-consistent disconnection are essential.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations\u003c\/strong\u003e: verify that your panel accepts JK-series breakers and that a 3-pole 90 A device aligns with your system’s electrical design and local codes. Use this breaker as part of a cohesive protection strategy within a Siemens-compatible distribution setup to ensure predictable performance and easier maintenance over the life of the installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423273210018,"sku":"JK3B090","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-jk3b090","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}