{"product_id":"siemens-mbkqj3150h-circuit-breaker","title":"Siemens | MBKQJ3150H | Circuit Breaker | 150A | 3-Pole | 480V | 10kA | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens MBKQJ3150H Circuit Breaker — a purpose-built solution for safeguarding 3-phase, 480V electrical systems with 150A capacity. Engineered for maintenance, retrofit, and replacement tasks, this bolt-on breaker delivers dependable protection where precise specs matter most.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 150 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting rating:\u003c\/strong\u003e 10 kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this breaker unique\u003c\/h3\u003e\n\u003cp\u003eDesigned to deliver balanced protection across all three phases, the MBKQJ3150H ensures synchronized tripping in demanding 480V distribution environments. The bolt-on mounting provides a secure, vibration-resistant installation that’s ideal for panel retrofits and replacements where space and mounting compatibility are critical. With a robust 10kA interrupting capacity, it caters to typical fault currents found in commercial and light industrial applications, helping to protect both conductors and connected equipment.\u003c\/p\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanel retrofits upgrading to a 150 A, 3-pole protection solution\u003c\/li\u003e \u003cli\u003eReplacement for failed or aging circuit breakers with matching specs\u003c\/li\u003e \u003cli\u003eMaintenance work in commercial or light industrial facilities using 480V three-phase systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and installation notes\u003c\/h3\u003e\n\u003cp\u003eFor the most reliable match, reference the part number MBKQJ3150H when checking compatibility. Confirm fit and ratings before ordering, and engage a qualified electrician to install and verify wiring configuration and panel compatibility to ensure optimal protection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425647513762,"sku":"MBKQJ3150H","price":2921.0,"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-mbkqj3150h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}