{"product_id":"siemens-hed41b040l-40a-277v-1-pole-bolt-on-circuit-breaker","title":"Siemens HED41B040L - 40 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HED41B040L is a 40‑amp, 277‑volt, 1‑pole bolt‑on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for consistent performance, it combines a rugged bolt‑on mounting with a thermal‑magnetic trip system to guard against both overloads and short circuits, keeping electrical systems safe and downtime to a minimum.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt‑on mounting\u003c\/strong\u003e creates a rigid, vibration‑resistant bus connection, reducing the risk of loose connections that can lead to intermittent outages or nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by reacting to both gradual overcurrents and instantaneous short‑circuit events, helping protect wiring and devices downline.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to pair with Siemens matching OEM load centers and panelboards, ensuring a clean fit and reliable electrical performance in existing systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments, making it a practical choice for upgrades, remodels, or new installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat it protects and how it helps you\u003c\/h3\u003e\n\u003cp\u003eIn everyday terms, this 1‑pole, 40A breaker provides two critical protections in one compact device. First, it limits continuous current to prevent overheating of conductors and connected equipment. Second, it detects dangerous short‑circuit conditions and interrupts power quickly to minimize damage and reduce the risk of fire. With a 277V rating, it’s well suited for systems that operate at higher line voltages typical in commercial or specialized installations, while still fitting standard panelboard footprints.\u003c\/p\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: HED41B040L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating\u003c\/strong\u003e: 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 277 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 1‑pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style\u003c\/strong\u003e: Bolt‑on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal‑magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications\u003c\/strong\u003e: Branch circuit overcurrent and short‑circuit protection in panelboards and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading a residential service panel to handle higher demand or to balance loads more effectively\u003c\/li\u003e \u003cli\u003eInstalling or expanding commercial lighting and receptacle circuits in small to mid‑sized facilities\u003c\/li\u003e \u003cli\u003eProtecting critical branch circuits in light industrial environments where reliability matters\u003c\/li\u003e \u003cli\u003eReplacing aging breakers in Siemens OEM panels to maintain certification and compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance for installation and operation\u003c\/h3\u003e\n\u003cp\u003eChoose this breaker when you need robust, straightforward protection with a secure connection. Its bolt‑on design simplifies mounting to compatible bus bars, and the thermal‑magnetic trip ensures predictable behavior across a range of temperatures and load conditions. For best results, pair it with Siemens panelboards or load centers specified by your electrical design, verify correct voltage and amperage ratings for the circuit, and follow all applicable electrical codes during installation.\u003c\/p\u003e \u003ch3\u003eWhy choose AmpState for Siemens breakers\u003c\/h3\u003e\n\u003cp\u003e AmpState offers genuine Siemens components designed for long‑term reliability in demanding environments. This HED41B040L bolt‑on breaker provides the exact protection profile you need for safe, compliant electrical distribution—delivered with clear documentation, readily available stock, and fast shipping to keep your project on schedule.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349799162018,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-hed41b040l-40-a-277-v-1-pole-bolt-on-circuit-breaker-656.webp?v=1788729513","url":"https:\/\/www.ampstate.com\/products\/siemens-hed41b040l-40a-277v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}