{"product_id":"siemens-bq2b045-45a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens BQ2B045 - 45 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens BQ2B045\u003c\/strong\u003e is a reliable 45 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit events in panelboards and load centers. This unit is built for dependable, long-term performance in a range of settings, from home to light commercial installations.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSecure bolt-on mounting\u003c\/b\u003e provides a rigid, vibration-resistant bus connection that stays put through real-world conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThermal-magnetic trip unit\u003c\/b\u003e delivers stable, repeatable protection, responding quickly to overloads while minimizing nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOEM compatibility\u003c\/b\u003e is ensured with matching Siemens load centers and panelboards, enabling a straightforward, worry-free upgrade or replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVersatile application\u003c\/b\u003e suitable for \u003cem\u003eresidential, commercial, and light industrial\u003c\/em\u003e electrical systems requiring reliable 2-pole protection at 240 V.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eProduct specifics\u003c\/b\u003e — Part Number: BQ2B045; Type: Thermal-magnetic molded case circuit breaker; Poles: 2; Mounting Style: Bolt-on; Application: Branch circuit overcurrent and short-circuit protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe BQ2B045 excels in scenarios where robust protection and install-time confidence matter most. Use it to guard branch circuits feeding critical equipment, lighting runs, or receptacle banks within Siemens panelboards and load centers. The bolt-on design simplifies mounting in compatible enclosures, making it a practical choice for service upgrades, panel replacements, or new installations where 240-volt, 45-amp protection is required.\u003c\/p\u003e \u003cp\u003eWhy choose this Siemens MCCB over generic alternatives? It combines a proven thermal-magnetic trip mechanism with a secure mounting method and OEM-aligned compatibility, ensuring consistent protection performance across installations. In real-world terms, you’ll benefit from fewer false trips, quicker fault clearance, and a safer, more reliable electrical system—without compatibility concerns or wiring changes.\u003c\/p\u003e \u003cp\u003ePurchase the Siemens BQ2B045 from AmpState to equip your panelboard or load center with trusted Siemens protection that’s ready to install, designed for durability, and backed by a legacy of electrical reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349761970338,"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_6cdeeede-4d77-44ca-a982-5abbeaada74c.png?v=1764156101","url":"https:\/\/www.ampstate.com\/products\/siemens-bq2b045-45a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}