{"product_id":"siemens-bq3b020h-20a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens BQ3B020H - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens BQ3B020H delivers reliable overcurrent and short-circuit protection for power distribution in panelboards and load centers. This 20A, 240V, 3-pole bolt-on molded case circuit breaker is engineered for durability and precision, pairing a secure mounting scheme with a thermal-magnetic trip unit to provide stable, repeatable protection where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e A rigid, vibration-resistant bus connection that stays solid through equipment movement and routine maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Combines heat-based overload protection with magnetic short-circuit response for dependable, predictable tripping behavior.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 240V, 20A configuration:\u003c\/strong\u003e Ideal for 3-phase feeders and branch circuits in commercial, residential, and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolded-case durability:\u003c\/strong\u003e Built to withstand the demands of electrical panels, delivering long-term performance in busy panels and enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility:\u003c\/strong\u003e Designed to work with matching OEM load centers and panelboards, simplifying retrofits and installs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted protection:\u003c\/strong\u003e Specifically engineered for branch circuit overcurrent and short-circuit protection, helping to prevent damage and downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is purpose-built for professionals who need a dependable, plug-and-play solution that integrates smoothly with existing panel infrastructure. The 3-pole design supports 3-phase systems and larger distribution schemes, while the 20A rating covers a broad range of typical branch circuits found in homes, offices, retail spaces, and light industrial equipment bays.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential service panels requiring robust protection for multi-wire branch circuits and shared loads.\u003c\/li\u003e \u003cli\u003eCommercial panelboards powering lighting, HVAC controls, outlets, and small equipment feeders.\u003c\/li\u003e \u003cli\u003eLight industrial panels where reliable, vibration-tolerant protection is needed for 3-phase feeders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey benefits in practice\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReduced nuisance trips due to a stable thermal-magnetic trip mechanism that responds quickly to short circuits while accommodating normal load variations.\u003c\/li\u003e \u003cli\u003ePeace of mind from a unit designed to mount securely in OEM-compatible panel systems, ensuring consistent electrical performance over time.\u003c\/li\u003e \u003cli\u003eStreamlined installation and maintenance with a bolt-on interface that simplifies service upgrades and panel replacements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: BQ3B020H\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage: 20A\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplications: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an aging panel, stocking parts for ongoing service work, or installing new equipment in a light industrial setting, the Siemens BQ3B020H offers a precise, durable solution designed to fit seamlessly with compatible OEM load centers and panelboards. With its combination of secure mounting, dependable trip technology, and industry-standard ratings, it helps you keep circuits protected, downtime to a minimum, and panels running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349764329634,"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_f0389978-c9b2-44eb-8b9c-74cc34bd267a.png?v=1764156153","url":"https:\/\/www.ampstate.com\/products\/siemens-bq3b020h-20a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}