{"product_id":"siemens-qj3-b150-150a-3p-240v-circuit-breaker","title":"Siemens QJ3-B150 Circuit Breaker, 150A, 3-Pole, 240V","description":"\u003cdiv\u003e\n\u003cp\u003ePower reliability in demanding environments with the Siemens QJ3-B150 Circuit Breaker. This 150 A, 3-pole device is purpose-built for industrial electrical service, maintenance, and replacement projects, delivering dependable protection for 3-phase 240V systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility with your panel\u003c\/strong\u003e — verify fit by part number: QJ3-B150, and align with your specific application requirements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e — ideal for 3-phase 240V circuits that run motors, drives, conveyors, and other heavy industrial equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capacity\u003c\/strong\u003e — 150 A rating supports substantial loads while safeguarding wiring and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStreamlined maintenance and replacement\u003c\/strong\u003e — designed for straightforward swaps in existing Siemens installations, minimizing downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSupport for compatibility checks\u003c\/strong\u003e — if you’re unsure about fit, message us and we’ll help confirm whether QJ3-B150 matches your panel and use case.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases you can rely on:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eReplacing aging or failed breakers in industrial control panels that power 3-phase 240V equipment.\u003c\/li\u003e \u003cli\u003eUpgrading service panels to accommodate higher loads without a full panel change, thanks to a compatible 150 A, 3-pole design.\u003c\/li\u003e \u003cli\u003eMaintaining production line uptime by selecting a Siemens-breaker match that preserves warranty and system integrity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy the Siemens QJ3-B150 matters in real-world terms: it’s part of a trusted protection lineage designed to integrate smoothly with Siemens electrical infrastructure. That means procurement is simpler, maintenance cycles are clearer, and you get consistent performance across your critical systems.\u003c\/p\u003e \u003cp\u003eBefore you order, double-check the essentials to ensure a perfect fit:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePart number: QJ3-B150\u003c\/li\u003e \u003cli\u003eVoltage rating: 240 V\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eAmperage: 150 A\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility for your exact setup? Message us and we’ll assist you in selecting the right Siemens circuit breaker for your application.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415966699682,"sku":"QJ3-B150","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj3-b150-circuit-breaker-150a-3-pole-240v-breakers-909.webp?v=1789216554","url":"https:\/\/www.ampstate.com\/products\/siemens-qj3-b150-150a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}