{"product_id":"square-d-ejb14050-50a-277v-1-pole-bolt-on-circuit-breaker","title":"Square D EJB14050 - 50 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D EJB14050\u003c\/strong\u003e — a 50 A, 277 V, 1‑pole bolt‑on molded case circuit breaker from AmpState. Built to deliver dependable branch circuit overcurrent and short‑circuit protection in panelboards and loadcenters, it’s engineered for performance where it matters most—reliability, safety, and long service life in commercial and light industrial environments.\u003c\/p\u003e \u003ch2\u003eWhy this 1-pole bolt‑on breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt‑on mounting\u003c\/strong\u003e provides a rigid, vibration‑resistant bus connection, minimizing the risk of loose connections that can lead to overheating and nuisance trips in panels and enclosures installed in busy or demanding spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip unit\u003c\/strong\u003e offers stable, repeatable protection across a range of temperatures and loads. It detects both overloads and short circuits quickly, helping to prevent equipment damage and unplanned downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM‑compatibility\u003c\/strong\u003e is built in—designed to pair with matching Square D OEM loadcenters and panelboards for straightforward installation and dependable coordination with existing protections.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suited for residential, commercial, and light industrial settings where 277 V circuits require solid protection, such as lighting, small equipment feeds, and control circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: EJB14050\u003c\/li\u003e \u003cli\u003eType: Thermal‑magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 50 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 277 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 1\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 \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e277 V lighting feeders in office buildings, retail spaces, and other commercial facilities\u003c\/li\u003e \u003cli\u003eSubpanels and main distribution panels in light industrial environments\u003c\/li\u003e \u003cli\u003e retrofit projects where OEM panelboards require precise compatibility and reliable protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical guidance for installation and use\u003c\/h2\u003e\n\u003cp\u003ePlan for a clean, direct bus connection with the bolt‑on terminals to maximize the breaker’s vibration resistance. Verify compatibility with the existing panelboard or loadcenter, and follow manufacturer torque specifications during mounting. For ongoing reliability, perform periodic visual inspections for secure connections and signs of wear or heat during routine panel maintenance.\u003c\/p\u003e \u003ch2\u003eWhat problems this solves\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReduces the risk of nuisance trips due to vibration or loose bus connections in dynamic environments\u003c\/li\u003e \u003cli\u003eDelivers predictable, thermal‑magnetic protection to safeguard wiring, lighting circuits, and small equipment from overloads and short circuits\u003c\/li\u003e \u003cli\u003eStreamlines installations by aligning with OEM panel designs, minimizing compatibility headaches\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D EJB14050 when you need a robust, 50‑amp, 277‑volt, 1‑pole bolt‑on circuit breaker that delivers dependable protection, straightforward installation, and long‑term reliability in commercial and light industrial electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355207061666,"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_372e0119-4ef2-47f0-b310-a36c8f4e090e.png?v=1764690354","url":"https:\/\/www.ampstate.com\/products\/square-d-ejb14050-50a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}