{"product_id":"siemens-bqd345-45a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens BQD345 - 45 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens BQD345 is a purpose-built 3-pole, 45 A, 480 V bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built for environments ranging from homes to light commercial and industrial spaces, this unit provides steady, reliable protection when safety and uptime matter most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e creates a rigid, vibration-resistant bus connection, reducing connection wear and ensuring consistent electrical contact even in demanding installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both sustained overloads and short-circuit events, helping prevent nuisance trips while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e pairs with 3-phase systems for balanced protection across all phases, making it ideal for commercial and light industrial feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480V rating\u003c\/strong\u003e aligns with higher-voltage distribution requirements, supporting a wide range of load centers and panelboards used in professional settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e45A current rating\u003c\/strong\u003e provides appropriate overcurrent protection for mid-range circuits without unnecessarily constraining usable load.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e is designed to work with matching Siemens OEM load centers and panelboards, ensuring a coordinated protection solution within your electrical distribution.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applicability\u003c\/strong\u003e suited for residential, commercial, and light industrial applications, offering a common, scalable solution across projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems does the Siemens BQD345 solve?\u003c\/h3\u003e\n\u003cp\u003eWhen circuits face overloads or short circuits, a robust breaker is essential to prevent wiring damage, fire risk, and equipment downtime. The BQD345 combines secure installation with precise thermal-magnetic trip behavior to minimize unplanned outages and protect downstream gear, motors, lighting, and outlets in a clean, integrated package.\u003c\/p\u003e \u003ch3\u003eUse cases you can count on\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or expanding a panelboard in small office suites or retail spaces that use 3-phase distribution.\u003c\/li\u003e \u003cli\u003eProviding final branch protection for shared commercial loads, such as lighting and receptacle banks in modular spaces.\u003c\/li\u003e \u003cli\u003eIntegrating into residential-to-light industrial setups where consistent trip performance and reliable mounting are priorities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e BQD345\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Siemens BQD345 when you need a reliable, OEM-compatible, 3-pole breaker that performs consistently under real-world loads. Its bolt-on design, robust trip mechanism, and compatibility with Siemens panelboards make it a smart, long-term solution for safeguarding electrical distribution in a variety of settings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349769539746,"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_27efd545-7eb6-4999-b697-1b5d0f7d0618.png?v=1764156267","url":"https:\/\/www.ampstate.com\/products\/siemens-bqd345-45a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}