{"product_id":"square-d-qob3301021-30a-3-pole-bolt-on-circuit-breaker","title":"Square D QOB3301021 - 30 A, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D QOB3301021 — a 30A, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Designed to handle overcurrent and short-circuit events with precision, it’s a purpose-built solution for residential, commercial, and light industrial electrical systems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays put even in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance, ensuring reliable response to both overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e protects three conductors simultaneously, promoting coordinated shutoff for safe, predictable operation in multi‑phase circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e compatibility with matching Square D loadcenters and panelboards helps you extend or retrofit existing electrical infrastructure without compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating of 30A\u003c\/strong\u003e is ideal for circulating protection in medium-load circuits while maintaining headroom for startup surges common in commercial equipment and certain residential setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolded case construction\u003c\/strong\u003e for durability and long service life in typical service environments found in panelboards and loadcenters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number QOB3301021\u003c\/strong\u003e from Square D ensures you’re sourcing a trusted, standardized component for reliable replacement and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe QOB3301021 is a practical choice when you need robust, code-conscious protection that won’t compromise system performance. Its bolt-on mount and vibration-resilient connection make it especially well-suited for panels where physical stability and dependable trips matter most, such as equipment racks, commercial luminaires, and other distributed loads in light industrial settings.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWho benefits most\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors replacing aging or failed breakers in panelboards and loadcenters\u003c\/li\u003e \u003cli\u003eFacilities managers safeguarding critical branch circuits in small to mid-size commercial spaces\u003c\/li\u003e \u003cli\u003eResidential settings with multi‑breaker panel assemblies requiring reliable, coordinated protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOB3301021\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 30A\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D QOB3301021 for a reliable, OEM-compatible solution that aligns with real-world use cases and installation realities. When you need predictable protection, stable operation, and a plug‑and‑play approach to upgrading or maintaining your panel ecosystems, this 30A, 3-pole bolt-on breaker from AmpState delivers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355418775714,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_fe7811d7-11ba-4ae4-b9cd-825c1d3026f7.png?v=1764691981","url":"https:\/\/www.ampstate.com\/products\/square-d-qob3301021-30a-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}