{"product_id":"siemens-3rv2021-0ka10-circuit-breaker","title":"Siemens 3RV2021-0KA10 - Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens 3RV2021-0KA10\u003c\/strong\u003e molded case circuit breaker delivers dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Designed with a compact footprint and built for real-world electrical environments, this unit plugs directly into Siemens OEM systems for a seamless, reliable protection solution.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space and simplifies layouts in confined electrical enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection across varying temperatures and loading conditions, balancing quick short-circuit response with consistent overload protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e engineered to fit matching Siemens loadcenters and panelboards, reducing installation guesswork and ensuring proper mechanical and electrical connections.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across settings\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical distributions, helping single sources manage diverse protection needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical details:\u003c\/strong\u003e Manufacturer — Siemens; Part Number — 3RV2021-0KA10; Type — Thermal-magnetic molded case circuit breaker; Application — Branch circuit overcurrent and short-circuit protection.\u003c\/p\u003e \u003cp\u003eThis breaker shines in scenarios like panel upgrades, new installations in Siemens-based systems, or retrofits where space efficiency and reliable protection matter. The combination of a space-saving design with a thermal-magnetic trip mechanism means predictable performance—fast magnetic trips for sudden faults and calibrated thermal trips for routine overloads—keeping wiring and connected equipment safeguarded. Its OEM compatibility ensures a straightforward, professional installation that aligns with the rest of your Siemens panel ecosystem.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e electricians and facilities managers handling residential panels, small offices, retail spaces, and light industrial distributions that rely on consistent, compatible Siemens protection components.\u003c\/p\u003e \u003cp\u003eChoose the Siemens 3RV2021-0KA10 for a precise, purpose-built solution that integrates smoothly with your Siemens panelboards and delivers dependable branch-circuit protection when it matters most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349741850786,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-3rv2021-0ka10-circuit-breaker-ampstate-breakers-755.webp?v=1788719565","url":"https:\/\/www.ampstate.com\/products\/siemens-3rv2021-0ka10-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}