{"product_id":"eaton-hfd1100-100a-277v-1-pole-bolt-on-circuit-breaker","title":"Eaton HFD1100 - 100 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton HFD1100 is a 100-amp, 277-volt, 1-pole bolt-on molded case circuit breaker designed to shield branch circuits in panelboards and loadcenters from overloads and short circuits. Built for reliability in demanding electrical environments, this device combines secure mounting with precise, repeatable protection to keep your power system running smoothly.\u003c\/p\u003e \u003ch3\u003eWhy the HFD1100 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, minimizing movement that can compromise connections and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by reacting to overloads thermally and shortening fault isolation time with a magnetic trip for fast response to short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures seamless integration with matching Eaton load centers and panelboards, making upgrades or replacements straightforward.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile 277V protection\u003c\/strong\u003e is ideal for residential, commercial, and light industrial applications requiring reliable branch circuit protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HFD1100\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 100 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\u003ePractical uses and scenarios\u003c\/h3\u003e\n\u003cp\u003eIn commercial panelboards serving offices or retail spaces, the HFD1100 provides dependable protection for high-demand circuits at 277 V. It’s an effective replacement for aging breakers in OEM loadcenters, preserving the panel’s architecture while restoring safety margins. For light industrial environments where equipment startups can introduce vibration, the bolt-on design helps maintain a solid electrical bond over time, reducing the risk of loose connections and nuisance trips.\u003c\/p\u003e \u003ch3\u003eInstallation and safety notes\u003c\/h3\u003e\n\u003cp\u003eBefore installation, confirm compatibility with your OEM panelboard or loadcenter. The 1-pole bolt-on format is designed for straightforward mounting in appropriate enclosures; always follow local electrical codes and manufacturer guidelines to ensure safe operation and service life.\u003c\/p\u003e \u003cp\u003eWith the Eaton HFD1100, you gain precise, dependable overcurrent and short-circuit protection tailored for 100 A, 277 V circuits—delivering performance you can trust in a wide range of building configurations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349594329250,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hfd1100-100-a-277-v-1-pole-bolt-on-circuit-breaker-ampstate-275.webp?v=1788688761","url":"https:\/\/www.ampstate.com\/products\/eaton-hfd1100-100a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}