{"product_id":"siemens-bqd115-15a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens BQD115 - 15 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens BQD115 is a precise, dependable protection solution for commercial and light industrial electrical systems. With a 15A rating at 277V and a single pole, this bolt-on molded case circuit breaker is engineered to shield branch circuits from overcurrent and short-circuit events—helping protect wiring, outlets, and connected equipment in panelboards and loadcenters.\u003c\/p\u003e \u003ch2\u003eWhy engineers and electricians choose the Siemens BQD115\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing connection wear and improving long-term reliability in dynamic environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both overloads and short circuits, helping to minimize nuisance trips and maximize system uptime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e ensures seamless integration with matching Siemens panelboards and other OEM loadcenters, simplifying upgrades, replacements, and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277V, 1-pole, 15A\u003c\/strong\u003e configuration is ideal for commercial lighting circuits and other 277V applications, delivering targeted protection where it’s needed most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolded case construction\u003c\/strong\u003e combines durability with compact form, making it a practical choice for space-constrained panels in residential-adjacent commercial settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems does it solve?\u003c\/h3\u003e\n\u003cp\u003eWhen branch circuits face overcurrent or a sudden fault, the BQD115 interrupts power quickly to prevent insulation damage, fire risk, and equipment failure. Its precise thermal-magnetic trip curve minimizes unnecessary shutoffs while still providing prompt protection in the event of a genuine fault. This makes it a reliable choice for ongoing equipment protection and safety compliance in panelboards and loadcenters.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing aging or failed breakers in business or light industrial electrical panels\u003c\/li\u003e \u003cli\u003eUpgrading 277V circuits within commercial lighting or low-voltage distribution systems\u003c\/li\u003e \u003cli\u003eInstalling in new or retrofit projects where OEM compatibility and mechanical reliability matter\u003c\/li\u003e \u003cli\u003eProjects requiring a sturdy bolt-on connection to deter bus-bar movement in vibration-prone environments\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e BQD115\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 15A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 277V\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 \u003cp\u003eSold by AmpState, the Siemens BQD115 provides a focused, high-reliability solution for professionals who need precise protection in panelboards and loadcenters without compromising mounting integrity or OEM compatibility. For projects demanding dependable 277V single-pole protection with a robust bolt-on connection, this breaker is a practical, proven choice that keeps electrical systems safe and compliant.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349767409826,"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_21a25015-6084-4a8d-a1e1-6667ee5c7848.png?v=1764156223","url":"https:\/\/www.ampstate.com\/products\/siemens-bqd115-15a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}