{"product_id":"square-d-egb14045-45a-277v-1-pole-bolt-on-circuit-breaker","title":"Square D EGB14045 - 45 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cspan\u003eIntroducing the Square D EGB14045 - a purpose-built solution for reliable branch circuit protection in commercial and light industrial settings. At 45A and 277V, this 1-pole bolt-on molded case circuit breaker is engineered to deliver steady, predictable performance in demanding panelboards and loadcenters.\u003c\/span\u003e \u003ch3\u003eKey advantages that matter in the field\u003c\/h3\u003e\n\u003cp\u003eSecure bolt-on mounting provides a rigid, vibration-resistant connection to the bus, maintaining stable electrical contact even in high-traffic panels or equipment with mounting tolerances that shift over time. The thermal-magnetic trip unit combines fast response with consistent behavior, reducing nuisance trips while still delivering strong protection against overcurrent and short circuits.\u003c\/p\u003e \u003ch3\u003eDesigned for OEM compatibility and versatile use\u003c\/h3\u003e\n\u003cp\u003eEngineered to pair with matching Square D OEM panelboards and loadcenters, the EGB14045 delivers a seamless install experience and dependable long-term operation. Its 1-pole configuration makes it ideal for single-phase circuits in commercial lighting, feeders, and equipment that run on 277V—areas where reliable protection is essential but space and simplicity matter most.\u003c\/p\u003e \u003ch3\u003eWho benefits from this breaker\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical professionals upgrading or refurbishing panelboards in commercial spaces\u003c\/li\u003e \u003cli\u003eMaintenance teams stocking dependable, field-proven components for light industrial environments\u003c\/li\u003e \u003cli\u003eElectrical contractors seeking a durable, easy-to-install bolt-on solution compatible with Square D systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems this solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePrevents damage from sustained overcurrent by delivering consistent magnetic trip response\u003c\/li\u003e \u003cli\u003eMinimizes vibration-induced connection fatigue with secure bolt-on mounting\u003c\/li\u003e \u003cli\u003eEnsures compatibility and reliable performance within 277V circuits in panelboards and loadcenters\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases and installation ideas\u003c\/h3\u003e\n\u003cp\u003eUse the EGB14045 to protect a dedicated 277V circuit serving commercial lighting, HVAC feeders, or other single-phase equipment in a panelboard. Its bolt-on design is particularly advantageous when panel assemblies require a rigid connection that resists loosening over time, or when retrofitting older installations with a modern protection device. For panel builders, this breaker simplifies sourcing and maintains consistency across a fleet of Square D components.\u003c\/p\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 EGB14045\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 277 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\u003eWhy this matters for your equipment and uptime\u003c\/h3\u003e\n\u003cp\u003eChoosing a breaker that combines secure mounting, dependable protection, and OEM compatibility translates to faster service calls, fewer panel recalibrations, and consistent protection across your electrical distribution. The EGB14045 is purpose-built to deliver long-term reliability in environments where 277V circuits and single-pole protection are common, without compromising ease of installation or compatibility with existing Square D systems.\u003c\/p\u003e \u003ch3\u003eInformed choice, peace of mind\u003c\/h3\u003e\n\u003cp\u003eIf you’re assembling or maintaining a panelboard or loadcenter that relies on precise, repeatable protection for 277V single-phase circuits, the Square D EGB14045 stands out with its bolt-on rigidity and thermal-magnetic response. It’s a practical, field-ready choice for professionals who value compatibility, performance, and the confidence that comes with using trusted Square D components.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355197427874,"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_3453cd76-8f59-414a-9b2e-eb58b1d3758f.png?v=1764690264","url":"https:\/\/www.ampstate.com\/products\/square-d-egb14045-45a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}