{"product_id":"square-d-ejb16045-45a-347v-1-pole-bolt-on-circuit-breaker","title":"Square D EJB16045 - 45 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D EJB16045 45A, 347V, 1-Pole Bolt-On Circuit Breaker — a purpose-built solution for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Designed for professional electrical installations, this molded case breaker anchors your electrical system with a secure, vibration-resistant connection and precise protection performance.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhat sets this breaker apart\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e ensures a rigid bus connection, reducing movement and wear in environments with vibration or frequent panel access.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by quickly reacting to overloads and short circuits, helping to prevent damage to downstream equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e is engineered to be compatible with matching Square D loadcenters and panelboards, facilitating straightforward integration without unnecessary adaptations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e ideal for residential, commercial, and light industrial settings where reliable discrete-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EJB16045\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 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 347 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\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\u003ePractical use cases\u003c\/h3\u003e\n\u003cp\u003eUse this breaker to protect branch circuits in commercial lighting panels fed from 347V systems, or to replace a legacy unit in a panelboard that requires a robust, single-pole, bolt-on solution. It’s well-suited for spaces where vibration is a factor—such as equipment rooms, mechanical spaces, and areas with active HVAC or pumps—where a secure connection helps maintain consistent protection over time. Whether you’re building out a new installation or upgrading existing infrastructure, this 45A unit provides dependable, code-compliant isolation for individual circuits.\u003c\/p\u003e \u003ch3\u003eWhy choose this model from AmpState\u003c\/h3\u003e\n\u003cp\u003eAs a trusted source for genuine OEM electrical components, AmpState ensures you receive authentic Square D hardware designed to work together seamlessly with your panelboards and loadcenters. The EJB16045 combines proven performance with straightforward installation, giving electricians and facility managers a reliable, long-term solution for protecting critical circuits.\u003c\/p\u003e \u003ch3\u003eTips for installation and optimization\u003c\/h3\u003e\n\u003cp\u003eBefore installation, confirm that your panelboard matches the EJB family requirements and that the bolt-on mounting pattern aligns with the bus arrangement. Use this unit for new builds or replacements where a single-pole, bolt-on molded case breaker is specified, and pair it with corresponding OEM devices to maintain system integrity and electrical performance over the life of the installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355207520418,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-ejb16045-45-a-347-v-1-pole-bolt-on-circuit-breaker-408.webp?v=1788741332","url":"https:\/\/www.ampstate.com\/products\/square-d-ejb16045-45a-347v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}