{"product_id":"square-d-qob3125sl-125a-3p-circuit-breaker","title":"Square D QOB3125SL 125A 3P Circuit Breaker, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the \u003cb\u003eSquare D QOB3125SL\u003c\/b\u003e—a \u003cb\u003e125A\u003c\/b\u003e, \u003cb\u003e3-pole\u003c\/b\u003e bolt-on circuit breaker designed for robust circuit protection in panelboards, load centers, and electrical distribution systems. This unit is the smart choice when a precise part-number match is essential for maintenance, panel fabrication, or spare inventory.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eManufacturer:\u003c\/b\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e QOB3125SL\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAmperage:\u003c\/b\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePoles:\u003c\/b\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eMounting:\u003c\/b\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAvailability:\u003c\/b\u003e From AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this bolt-on breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eDirect part-number match\u003c\/b\u003e matters for quick replacements and consistent panel assembly. If your project calls for QOB-series bolt-on protection, this is the exact device to spec.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eSecure bolt-on mounting\u003c\/b\u003e provides dependable, vibration-resistant installation in compatible panelboards and distribution equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e3-pole, 125 A capacity\u003c\/b\u003e supports three-phase circuits and higher load protections common in commercial and industrial setups.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eRapid inventory usability\u003c\/b\u003e—keep this exact model on hand to minimize downtime when replacements are needed, without guessing compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanelboard and load center retrofits where a bolt-on Square D breaker is required.\u003c\/li\u003e \u003cli\u003eSpare parts inventory for projects that rely on precise, direct-part-number compatibility.\u003c\/li\u003e \u003cli\u003eNew builds or refurbishments in commercial and light industrial environments that employ Square D bolt-on protection schemes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify your panels are designed for \u003cb\u003ebolt-on\u003c\/b\u003e breakers in the QOB family, ensuring a proper fit and secure mounting.\u003c\/li\u003e \u003cli\u003eUse in 3-phase distributions where a 125 A protection device is appropriate for the circuit load and wire sizing.\u003c\/li\u003e \u003cli\u003eConsult your panel labeling or project spec to confirm that \u003cb\u003eQOB3125SL\u003c\/b\u003e is the correct direct replacement or match for the intended circuit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eNeed help confirming fit?\u003c\/h3\u003e\n\u003cp\u003eAmpState provides support to ensure you’re choosing the right part. \u003cb\u003eNeed help matching a part number or confirming compatibility?\u003c\/b\u003e Send us a note and we’ll help you verify the fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412775686306,"sku":"QOB3125SL","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qob3125sl-125a-3p-circuit-breaker-bolt-on-ampstate-breakers-127.webp?v=1789026400","url":"https:\/\/www.ampstate.com\/products\/square-d-qob3125sl-125a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}