{"product_id":"siemens-neb1b020b-circuit-breaker","title":"Siemens | NEB1B020B | Circuit Breaker | 20A | 1-Pole | 277V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens NEB1B020B delivers trusted protection for 277-volt electrical systems in a compact, maintenance-friendly package. This 20A, 1-Pole circuit breaker uses a robust Bolt-On design, making it a reliable choice for retrofit, replacement, and routine maintenance in commercial and industrial panels where precise specs matter.\u003c\/p\u003e \u003cp\u003eDesigned for single-pole protection on 277V circuits, this unit is ideal for individual lighting feeds and modest equipment circuits common in office complexes, retail spaces, and light-industrial environments. The bolt-on mounting provides a secure connection that stays tight against panel vibration and door operation, helping maintain consistent trip performance over time.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 20A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 277V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e NEB1B020B\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this is the right choice for your panel\u003c\/h3\u003e\n\u003cp\u003eThe NEB1B020B is built to meet exact Siemens specifications, ensuring seamless compatibility with systems that require a 20A, 1-Pole, 277V bolt-on breaker. It’s particularly valuable when panel space is tight and secure mounting is essential for long-term reliability, reducing the risk of connection looseness that can affect protection performance.\u003c\/p\u003e \u003ch3\u003eUse cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects upgrading aging panels to current Siemens-compatible bolt-on breakers\u003c\/li\u003e \u003cli\u003eReplacement for a failed 20A bolt-on unit in 277V circuits\u003c\/li\u003e \u003cli\u003eMaintenance of commercial lighting feeds and small equipment circuits in retrofit or service work\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eAlways confirm fit and ratings before ordering—the part number NEB1B020B is your best reference for compatibility. When installing, ensure the breaker is firmly seated on the bus and tightened per panel manufacturer guidelines to maintain reliable protection and minimize service interruptions.\u003c\/p\u003e \u003ch3\u003ePerformance, durability, and practical advantages\u003c\/h3\u003e\n\u003cp\u003eWith a dedicated 20A rating, this 1-Pole bolt-on breaker provides clean, predictable tripping behavior for overcurrent events in 277V circuits. The bolt-on design offers a sturdy, vibration-resistant install suitable for busy commercial environments, helping you avoid nuisance trips caused by loose connections and panel movement.\u003c\/p\u003e \u003cp\u003eFor electricians and facility managers who prioritize precise compatibility and long-term reliability, the Siemens NEB1B020B stands out as a focused, cost-effective solution for maintaining safe, compliant electrical protection in your 277V systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424780603554,"sku":"NEB1B020B","price":326.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-neb1b020b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}