{"product_id":"siemens-heb1b030b-30a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens HEB1B030B - 30 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens HEB1B030B is a trusted, heavy-duty solution for protecting branch circuits in panelboards and load centers. This 30A, 277V, 1-pole bolt-on molded case circuit breaker is built to deliver dependable overcurrent and short-circuit protection where reliability matters most—on commercial, light industrial, and even some residential applications. \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays put through demanding service, reducing wear and maintaining a solid electrical path.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e delivers stable, repeatable protection across a range of temperatures and load conditions, helping to prevent nuisance trips while safeguarding circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible:\u003c\/strong\u003e designed to pair with matching Siemens load centers and panelboards for straightforward upgrades, retrofits, or new installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile 277V single-pole protection:\u003c\/strong\u003e ideal for branch circuits powering commercial lighting, controls, and other single-phase equipment commonly found in offices, retail, and light industrial spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eKey specifications at a glance:\u003c\/strong\u003e 30A, 277V, 1-pole, bolt-on, molded case circuit breaker for reliable overcurrent and short-circuit protection.\u003c\/li\u003e\n\u003c\/ul\u003e In practice, this breaker excels where a secure, long-lasting connection is crucial—areas with panel movement or vibration, installations requiring solid bus engagement, or projects that must align with OEM hardware for dependable performance. The 1-pole design targets single-phase circuits, making it a practical choice for 277V circuits that power lighting, HVAC controls, outlets, and other essential equipment in commercial environments. If you’re assembling or upgrading a panel, the Siemens HEB1B030B offers a precise balance of rugged mounting, predictable protection, and OEM compatibility that helps you meet code requirements while reducing future maintenance. Trust this bolt-on molded case breaker to keep critical circuits protected today and for years to come.\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349797752994,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_aa98e89e-2405-467c-8933-e208ed965cb1.png?v=1764157089","url":"https:\/\/www.ampstate.com\/products\/siemens-heb1b030b-30a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}