{"product_id":"siemens-3rv2021-4ca10-circuit-breaker","title":"Siemens 3RV2021-4CA10 - Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 3RV2021-4CA10 molded case circuit breaker—a compact, reliable solution built to shield your electrical system from overcurrent and short-circuit events. Designed to fit seamlessly in panelboards and loadcenters, this unit keeps wiring tidy and panel real estate in check while delivering dependable protection for everyday power needs.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient molded case design\u003c\/strong\u003e minimizes bulky hardware and frees up valuable panel space for easier routing and future expansions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection with fast response to short circuits, and coordinated operation with upstream devices to reduce nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e engineered to work with matching Siemens panelboards and loadcenters, ensuring proper fit, whisker-free mounting, and reliable protection coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for residential, commercial, and light industrial environments where dependable branch-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Details\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 3RV2021-4CA10\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\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\u003cul\u003e \u003cli\u003eResidential panelboards where space efficiency and reliable protection matter for lighting, outlets, and appliance circuits\u003c\/li\u003e \u003cli\u003eSmall commercial panels handling lighting, HVAC controls, and office equipment\u003c\/li\u003e \u003cli\u003eLight industrial panels where durable protection and OEM compatibility streamline maintenance and replacements\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the 3RV2021-4CA10\u003c\/h3\u003e\n\u003cp\u003eThis breaker isn’t just a drop-in part; it’s a purpose-built solution from Siemens that aligns with your existing OEM loadcenters for consistent trip characteristics, predictable performance, and long-term reliability. Its compact design preserves panel capacity, while the thermal-magnetic trip unit delivers precise protection across varying loads, temperatures, and wiring configurations—giving you peace of mind in daily operations.\u003c\/p\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panelboard compatibility with Siemens OEM data before installation to ensure optimal fit and protection coordination.\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety practices: de-energize equipment, use the correct torque on terminal connections, and consult the official installation instructions for your panel model.\u003c\/li\u003e \u003cli\u003eWhen ordering, confirm the exact trip characteristics and interrupting rating required for your circuits to maintain safe and code-compliant protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349742899362,"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_1fdd6659-7943-4b57-901a-8ee9bda3fe62.png?v=1764155697","url":"https:\/\/www.ampstate.com\/products\/siemens-3rv2021-4ca10-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}