{"product_id":"siemens-hed41b020l-20a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens HED41B020L - 20 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens HED41B020L — a 20 A, 277 V, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for reliability in commercial, residential, and light industrial environments, this unit pairs precise protection with straightforward installation, making it a smart choice for upgrading or hardening electrical distributions.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e: provides a rigid, vibration-resistant bus connection that stays secure through regular operation and on-site vibration, reducing looseness over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: combines temperature-sensitive and instantaneous magnetic elements for stable, repeatable protection, fighting nuisance trips while responding quickly to faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e: engineered to fit matching Siemens load centers and panelboards, ensuring a clean, code-compliant integration with existing systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277 V single-pole design\u003c\/strong\u003e: ideal for commercial lighting circuits and other 277 V applications, enabling efficient protection without mounting multiple devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: suitable for residential, commercial, and light industrial electrical installations that demand reliable 20 A protection on 1-pole circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications 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 HED41B020L\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 20 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\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eChoose the Siemens HED41B020L when you need reliable protection for 277 V circuits in panelboards and load centers. It’s a practical fit for commercial offices, retail spaces, schools, and light industrial facilities where space is at a premium and protection needs to be consistent across multiple shifts and environments. Its bolt-on design is particularly advantageous in installations that prioritize solid mechanical connections and long-term reliability in vibration-prone settings.\u003c\/p\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panelboard compatibility with Siemens OEM load centers to ensure proper fit and coordination with other protective devices.\u003c\/li\u003e \u003cli\u003eFollow manufacturer torque specifications during bolt-on mounting to maintain the integrity of the bus connection.\u003c\/li\u003e \u003cli\u003eUse like-for-like replacements to preserve system protection coordination and minimize nuisance trips.\u003c\/li\u003e \u003cli\u003ePair with appropriate conductors and terminations rated for 277 V to maximize performance and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens HED41B020L, you’re selecting a purpose-built solution that prioritizes precise protection, durable mounting, and compatibility with Siemens distribution products. This 20 A, 277 V, 1-pole bolt-on breaker delivers consistent protection for critical circuits, helping to keep facilities safe and operations uninterrupted.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349798768802,"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_f9220843-f04b-4458-bdbc-7be7084dbaf5.png?v=1764157127","url":"https:\/\/www.ampstate.com\/products\/siemens-hed41b020l-20a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}