{"product_id":"siemens-ed42b020-20a-480v-2-pole-bolt-on-circuit-breaker","title":"Siemens ED42B020 - 20 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for dependable protection in commercial and industrial electrical systems, the Siemens ED42B020 is a 20A, 480V, 2-pole bolt-on molded case circuit breaker designed to guard branch circuits against overcurrent and short circuits. Built to endure the demands of busy electrical environments, it combines precise protection with robust, vibration-resistant mounting that stays secure even in equipment with movement or vibration.\u003c\/p\u003e \u003ch3\u003eKey advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting for a rigid bus connection\u003c\/strong\u003e—ensures a solid, vibration-resistant interface that maintains consistent performance over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e—delivers stable, repeatable protection by blending thermal overload sensing with magnetic instantaneous trip for short-circuit events.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e—designed to work with matching Siemens OEM load centers and panelboards, simplifying replacement and upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application footprint\u003c\/strong\u003e—suitable for residential, commercial, and light industrial panel configurations that require reliable 480V protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical 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 ED42B020\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 20A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\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\u003eWhat makes this breaker uniquely valuable\u003c\/h3\u003e\n\u003cp\u003eThe ED42B020 isn’t just about meeting specifications—it’s about delivering reliable protection where it matters. The thermal-magnetic trip mechanism provides predictable response across a range of fault conditions, so you know exactly when and why the circuit will trip. The bolt-on design isn’t merely a mounting choice; it’s a practical solution for environments where vibration, panel movement, or high-energy equipment demands a more secure, maintenance-friendly connection. When paired with compatible Siemens panelboards, this breaker helps maintain consistent electrical performance and simplifies future service or upgrades.\u003c\/p\u003e \u003ch3\u003eIdeal use cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or stocking spare breakers in commercial electrical rooms and industrial panels that operate at 480V.\u003c\/li\u003e \u003cli\u003eProtecting branch circuits feeding motors, HVAC equipment, lighting, and other 480V loads in light industrial settings.\u003c\/li\u003e \u003cli\u003eReplacement in OEM-managed load centers where exact compatibility and mounting geometry are essential for safe, code-compliant operation.\u003c\/li\u003e \u003cli\u003eApplications requiring rapid, reliable short-circuit protection with predictable trip behavior in environments with vibration or equipment movement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility notes\u003c\/h3\u003e\n\u003cp\u003eDesigned to integrate with matching Siemens OEM load centers and panelboards, the ED42B020 provides a seamless retrofit path and streamlined maintenance. The bolt-on mounting system creates a robust electrical connection that resists loosening over time, helping to minimize nuisance tripping and connection faults in demanding installations. When selecting replacement components, ensure your panelboard or loadcenter supports a 2-pole, 480V, 20A molded case breaker to maintain electrical safety and compliance.\u003c\/p\u003e \u003ch3\u003eWhy choose Siemens ED42B020 for your panels\u003c\/h3\u003e\n\u003cp\u003eProfessionals choose the ED42B020 for its combination of precise protection, durable construction, and OEM compatibility. If you’re upgrading a panelboard in a commercial or light industrial setting, this breaker offers dependable overcurrent and short-circuit protection, with a mounting solution that stands up to vibration and time. With Siemens’ reputation for reliability in molded case breakers, you get predictable performance, easier serviceability, and a clear path for future panel updates.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349788184738,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ed42b020-20-a-480-v-2-pole-bolt-on-circuit-breaker-ampstate-540.webp?v=1788727112","url":"https:\/\/www.ampstate.com\/products\/siemens-ed42b020-20a-480v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}