{"product_id":"square-d-ejb34030-30a-480v-3-pole-bolt-on-circuit-breaker","title":"Square D EJB34030 - 30 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D EJB34030\u003c\/strong\u003e — a \u003cem\u003e30 A\u003c\/em\u003e, \u003cem\u003e480 V\u003c\/em\u003e, \u003cem\u003e3-pole\u003c\/em\u003e bolt-on molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit events. Built for dependable protection in panelboards and load centers, this unit delivers a secure, vibration-resistant connection and precise trip behavior you can trust when it matters most.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing the risk of loose terms or intermittent contacts in environments with movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines thermal overload protection with magnetic short-circuit protection, delivering fast, predictable tripping across a wide range of operating conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for 3-phase systems\u003c\/strong\u003e ideal for commercial and light industrial setups that run on three-phase power, helping protect motors, lighting, and feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-voltage capability\u003c\/strong\u003e rated at \u003cem\u003e480 V\u003c\/em\u003e, making it suitable for mid-to-large commercial installations and industrial panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e engineered to work with matching Square D OEM panelboards and load centers, ensuring proper fit, coordination, and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDedicated branch circuit protection\u003c\/strong\u003e—specifically suited for overcurrent and short-circuit protection in panelboards and load centers, helping you maintain electrical safety and continuity.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and use cases\u003c\/h3\u003e\n\u003cp\u003eDesigned for residential, commercial, and light industrial environments, the EJB34030 fits seamlessly into panelboard upgrades, new installations, or panel maintenance where a robust 3-pole, 30 A protection device is required. Use it to safeguard:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e3-phase motors and equipment feeders in small manufacturing or processing facilities\u003c\/li\u003e \u003cli\u003eHVAC and cooling system feeders in commercial buildings\u003c\/li\u003e \u003cli\u003eLighting and power distribution in mid-sized commercial spaces\u003c\/li\u003e \u003cli\u003eBuilding automation and control circuits that demand reliable short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you gain with this breaker\u003c\/h3\u003e\n\u003cp\u003eBeyond simple specs, the EJB34030 delivers practical value that translates to fewer maintenance calls and more consistent protection. The bolt-on design minimizes installation annoyance and maintenance downtime, while the thermal-magnetic trip unit reduces nuisance trips caused by brief temperature fluctuations or surges. Matching OEM compatibility means you won’t gamble on fit or electrical coordination, giving you confidence during upgrades or replacements.\u003c\/p\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: EJB34030\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 30 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480 V\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\u003eEquip your electrical ensemble with the Square D EJB34030 to ensure robust, reliable protection for 3-phase systems in panelboards and load centers. Its combination of secure mounting, precise trip performance, and OEM compatibility makes it a thoughtful, long-lasting choice for demanding residential, commercial, and light industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355209158818,"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-ejb34030-30-a-480-v-3-pole-bolt-on-circuit-breaker-629.webp?v=1788741638","url":"https:\/\/www.ampstate.com\/products\/square-d-ejb34030-30a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}