{"product_id":"square-d-ejb24090-90a-480v-2-pole-bolt-on-circuit-breaker","title":"Square D EJB24090 - 90 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your electrical protection with the Square D EJB24090 90A, 480V, 2-Pole Bolt-On Molded Case Circuit Breaker — a durable, family-approved solution designed to guard branch circuits in panelboards and load centers. Built for dependable overcurrent and short-circuit protection, this breaker combines rugged mounting with precise, repeatable trip performance for demanding electrical environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e — a rigid, vibration-resistant bus connection that stays put, even in equipment with heavy loads or challenging wiring layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e — delivers stable, repeatable protection by responding appropriately to both overcurrent and short-circuit conditions, reducing nuisance trips while safeguarding downstream equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e — specifically engineered to work with matching Square D OEM load centers and panelboards, ensuring a seamless fit and reliable protection across compatible installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e — suitable for residential, commercial, and light industrial settings, making it a practical choice for new builds, panel upgrades, or service replacements.\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 EJB24090\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 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\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 in panelboards and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 2-Pole bolt-on breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhen you need reliable protection for mid-to-large branch circuits, a 2-pole design like the EJB24090 provides coordinated switching for two hot legs in 480V systems. The bolt-on mounting delivers a solid mechanical connection, reducing the risk of connection loosening due to vibration or routing constraints. The thermal-magnetic trip mechanism offers predictable response times, helping you avoid nuisance trips while ensuring fast isolation during fault events. And because it’s designed to be compatible with Square D OEM panels, you’ll benefit from a streamlined installation process and consistent performance across your distribution hardware.\u003c\/p\u003e \u003ch3\u003eIdeal use cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations in panelboards and load centers that require a 90A, 480V, 2-pole bolt-on breaker.\u003c\/li\u003e \u003cli\u003eUpgrading or replacing aging protection devices in commercial electrical rooms or light industrial spaces.\u003c\/li\u003e \u003cli\u003ePanel upgrades where OEM compatibility ensures long-term reliability and simplified maintenance.\u003c\/li\u003e \u003cli\u003eApplications demanding robust protection for critical motors and feeders in 480V systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and lasting performance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panelboard compatibility with Square D EJB series components to ensure a trouble-free fit.\u003c\/li\u003e \u003cli\u003eFollow manufacturer wiring diagrams and torque specifications for the bolt-on mounting to maintain the vibration-resistant connection.\u003c\/li\u003e \u003cli\u003eConsider coordination with upstream protective devices to optimize protection curves and minimize nuisance trips.\u003c\/li\u003e \u003cli\u003eDesign your electrical layout with adequate clearance and ventilation around the breaker to maintain stable operation in varied temperatures.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D EJB24090 for dependable, OEM-aligned protection that keeps critical circuits safeguarded in diverse environments. Its combination of secure mounting, reliable thermal-magnetic protection, and broad compatibility makes it a pragmatic choice for professionals who value consistent performance and straightforward compatibility in residential, commercial, and light industrial panel installations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355208208546,"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_fa4c9cd0-94e4-4665-90f9-2333ee277738.png?v=1764690376","url":"https:\/\/www.ampstate.com\/products\/square-d-ejb24090-90a-480v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}