{"product_id":"ejb34030","title":"Square D EJB34030 - 30A, 277VAC, 3-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eWhen your three‑phase electrical system demands dependable overcurrent protection, the Square D EJB34030 stands up to the challenge. This 30A, 277VAC, 3‑pole circuit breaker is built for industrial-grade reliability in demanding environments, delivering safe, consistent protection for distribution panels, switchboards, and control panels.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 30A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277VAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑pole arrangement for true three‑phase protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBreaker type:\u003c\/strong\u003e Circuit breaker designed to interrupt fault conditions and protect downstream equipment\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey advantages that matter in real-world installations:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree‑phase protection in one device:\u003c\/strong\u003e With all three poles tied to trip together, this breaker prevents dangerous phase imbalances and protects motors, drives, and other 3‑phase loads from simultaneous faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile installation in critical power paths:\u003c\/strong\u003e Ideal for panelboards, switchboards, and motor control centers where compact, reliable protection is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial and commercial readiness:\u003c\/strong\u003e Engineered for environments where distribution panels and control panels require robust overcurrent protection and uptime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho benefits most from the EJB34030?\u003c\/p\u003e \u003cul\u003e \u003cli\u003eFacilities with 3‑phase equipment operating at 277V, such as lighting, HVAC controls, and automated systems\u003c\/li\u003e \u003cli\u003eOEMs integrating dependable protection into new control panels or retrofit projects\u003c\/li\u003e \u003cli\u003eMaintenance teams seeking a straightforward, durable replacement that preserves panel coordination and safety margins\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical considerations for install and use:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMatch the breaker to your panelboard or MCC’s three‑phase load to ensure proper trip characteristics and safe shutdowns.\u003c\/li\u003e \u003cli\u003eVerify wiring practices align with three‑phase feeder configurations, keeping conductors organized and clearly labeled to facilitate maintenance and future inspections.\u003c\/li\u003e \u003cli\u003ePlan for routine testing of protection coordination within your electrical distribution scheme to minimize downtime during fault events.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D EJB34030 when you need a trustworthy, three‑pole solution that protects 3‑phase loads at 277V with precision and reliability. It’s a purpose‑built choice for industrial, commercial, and OEM applications where dependable operation in distribution panels and motor control centers is non‑negotiable.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default","offer_id":46390529949858,"sku":"EJB34030","price":684.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_475da74c-9e6c-4c53-87ae-bb198d8d72cb.png?v=1765376842","url":"https:\/\/www.ampstate.com\/products\/ejb34030","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}