{"product_id":"siemens-fxd63b090l-90a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens FXD63B090L - 90 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eWhen you need dependable branch-circuit protection in panelboards and load centers, the Siemens FXD63B090L delivers reliable performance with a purpose-built design. This 90A, 600V, 3-pole bolt-on molded case circuit breaker is engineered to keep electrical systems safe and running smoothly in residential, commercial, and light industrial settings.\u003c\/p\u003e \u003ch3\u003eWhy the Siemens FXD63B090L stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the bus bars, reducing movement and ensuring consistent electrical contact in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines overload protection with fast short-circuit response, delivering stable, repeatable protection across varying temperatures and loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e ideal for 3-phase systems, balancing protection across all hot conductors and guarding against phase-to-phase faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e engineered to pair with matching Siemens OEM load centers and panelboards for straightforward replacement and seamless performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical infrastructure, from service panels to equipment feeders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey features and benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eA\/-rated current\u003c\/strong\u003e 90A to handle moderate to heavy branch circuits without nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e up to 600V, expanding suitability to a wide range of electrical distribution applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole construction\u003c\/strong\u003e provides comprehensive protection for 3-phase circuits and reduces the risk of unbalanced loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e ensures a solid mechanical and electrical connection, minimizing vibration-related wear over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic protection\u003c\/strong\u003e delivers precise trip characteristics that respond to both sustained overloads and short circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications 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 FXD63B090L\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 90A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\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 \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUse the FXD63B090L in panelboards and load centers serving commercial spaces, light industrial equipment rooms, or residential subpanels where 3-phase protection is required. It excels in motor-friendly environments where reliable short-circuit response minimizes downtime and protects critical equipment. Its bolt-on design makes it a practical choice for retrofit projects and new installations that demand a secure, vibration-resistant connection.\u003c\/p\u003e \u003ch3\u003eHow this breaker helps your system\u003c\/h3\u003e\n\u003cp\u003eWith a thermal-magnetic trip unit and a robust bolt-on mounting, the FXD63B090L delivers predictable protection for branch circuits. It helps prevent equipment damage from overloads and short circuits, reduces the likelihood of nuisance trips due to vibration or loose connections, and supports longer service life for your panel infrastructure. When you need a dependable, compatible solution for Siemens-compatible panels, this 3-pole breaker is a precise fit.\u003c\/p\u003e \u003ch3\u003ePractical installation tips\u003c\/h3\u003e\n\u003cp\u003eEnsure you’re pairing the FXD63B090L with matching Siemens OEM load centers or panelboards for optimal performance. Follow standard safety practices and manufacturer mounting guidelines when performing bolt-on installations to maximize contact integrity and protection reliability over time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349796475042,"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_9d53bb43-a141-4a6b-80ea-18c9883204cd.png?v=1764157036","url":"https:\/\/www.ampstate.com\/products\/siemens-fxd63b090l-90a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}