{"product_id":"square-d-3rv2021-4aa10-circuit-breaker","title":"Square D | 3RV2021-4AA10 | Circuit Breaker | 4A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D 3RV2021-4AA10: a precise, three-pole circuit breaker built for reliable protection in three‑phase electrical systems. With a 4‑amp rating, this unit is purpose‑built for applications that require careful current limiting while preserving system performance. When you’re maintaining, retrofitting, or replacing components in a panel, this breaker delivers the exact form and function you need to keep critical circuits protected.\u003c\/p\u003e \u003ch2\u003eKey advantages\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part reference:\u003c\/strong\u003e 3RV2021-4AA10 ensures compatibility with panels designed for Square D 3RV breakers, simplifying replacement decisions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3‑pole configuration:\u003c\/strong\u003e Ideal for three‑phase systems where simultaneous protection of all three lines is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e4‑amp protection:\u003c\/strong\u003e Provides precise current limitation for lightweight or control circuits within larger electrical installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, or replacement:\u003c\/strong\u003e A dependable choice for upgrading aging equipment, updating panel protection, or stocking a ready‑to‑use spare.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat this means for your project\u003c\/h2\u003e\n\u003cp\u003eIf you’re updating a panel or performing a retrofit, the 3RV2021-4AA10 offers a straightforward, reliable path to maintain consistent protection across all three phases. It’s especially valuable when projects require a specific low‑current rating without altering existing wiring or panel architecture.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance shutdowns where a precise 4A, 3‑pole protection is needed to safeguard control circuits within a three‑phase setup.\u003c\/li\u003e \u003cli\u003eRetrofits that require matching the original equipment protection profile to maintain panel clearance and trip characteristics.\u003c\/li\u003e \u003cli\u003eReplacement scenarios where the part number is the quickest route to compatibility and performance restoration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eImportant compatibility note\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering, confirm fit and ratings:\u003c\/strong\u003e the 3RV2021-4AA10 is listed as the best reference for compatibility with appropriate Square D panels. Rely on the part number to ensure you receive the exact electrical characteristics and physical footprint required for a seamless installation.\u003c\/p\u003e \u003cp\u003eFor technicians and engineers seeking dependable, industry‑standard protection, the Square D 3RV2021-4AA10 3‑pole, 4A circuit breaker delivers consistent performance, clear signaling of faults, and the confidence that comes with using a recognized protection device from a trusted brand.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426266763426,"sku":"3RV2021-4AA10","price":3282.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-3rv2021-4aa10-circuit-breaker-4a-3-pole-861.webp?v=1789546782","url":"https:\/\/www.ampstate.com\/products\/square-d-3rv2021-4aa10-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}