{"product_id":"siemens-bq3b070h-70a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens BQ3B070H - 70 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens BQ3B070H — a 70A, 240V, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. This unit combines rugged reliability with precise protection to keep commercial, residential, and light industrial electrical systems running smoothly.\u003c\/p\u003e \u003ch3\u003eKey benefits that matter in real use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: a rigid bus connection that minimizes movement and vibration-induced wear, delivering long-term reliability in dynamic environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: delivers stable, repeatable protection—the thermal element handles overloads, while the magnetic element responds swiftly to short circuits, reducing nuisance trips and protecting equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM loadcenter compatibility\u003c\/strong\u003e: designed to work seamlessly with matching Siemens loadcenters and panelboards, ensuring cohesive performance and simpler upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for three-phase systems\u003c\/strong\u003e: ideal for motor loads, HVAC equipment, and other 3-phase circuits common in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e: suitable for residential, commercial, and light industrial electrical distributions, making it a flexible choice for diverse projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker matters for your electrical protection\u003c\/h3\u003e\n\u003cp\u003eThe BQ3B070H provides robust overcurrent and short-circuit protection tailored to panelboard layouts and distribution boards. With its thermal-magnetic trip mechanism, you gain predictable performance under varying loads and ambient conditions, helping to prevent equipment damage and electrical fires. The bolt-on construction adds mechanical robustness, reducing the risk of connection loosening in environments with vibration or movement.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: BQ3B070H\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 70A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or retrofitting 3-phase panels in commercial spaces, small offices, and light industrial facilities.\u003c\/li\u003e \u003cli\u003eProtecting motors and three-phase equipment in HVAC, pumps, and manufacturing auxiliary lines.\u003c\/li\u003e \u003cli\u003eIntegrating with Siemens OEM panelboards for consistent electrical performance and streamlined maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eVerify that your panelboard is designed to accept bolt-on breakers in the Siemens BQ family. Follow the OEM installation instructions for mounting torque and bus connection to maintain maximum performance. Always pair this breaker with compatible Siemens loadcenters to ensure protection curves and trip characteristics align with your system design. For any project involving three-phase circuits, confirm conductor sizing and protection coordination per local electrical codes to achieve safe, efficient operation.\u003c\/p\u003e \u003cp\u003eUpgrade your distribution panel with the Siemens BQ3B070H for reliable 3-phase protection that stands up to vibration, delivers repeatable performance, and integrates smoothly with Siemens panel ecosystems. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349766394018,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_b3df4bd5-d74e-4891-be4a-5c00f999da64.png?v=1764156203","url":"https:\/\/www.ampstate.com\/products\/siemens-bq3b070h-70a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}