{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-0CA10-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-0CA10-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-0CA10-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0CA10-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2 motor starter protector, size S0, 3RV2021-0CA10-0DA0, overload range 0.18-0.25 A, short-circuit release 3.3 A, screw terminals, standard switching capacity.","salesMarkdown":"## Motor starter protector for system protection The Siemens 3RV2021-0CA10-0DA0 is a SIRIUS 3RV2 motor starter protector in size S0, designed for system protection without phase failure protection. It combines an overload relay (A-release set at 0.18...0.25 A) and a magnetic short-circuit release (3.3 A) in one compact unit, with screw terminals and standard switching capacity. The 0.18...0.25 A overload range means this protector is sized for very small motor loads — fractional-horsepower pumps, fans, or conveyor drives drawing under a quarter amp. The 3.3 A short-circuit release clears faults quickly, protecting downstream wiring and the contactor. Mounts on a DIN rail. The S0 frame size is a common footprint across the 3RV2 family, so it shares bus-bar and auxiliary-contact layouts with other S0 breakers. RoHS compliant since 01-10-09. REACH candidate-list information is available from Siemens on request.","metaTitle":"Siemens 3RV2021-0CA10-0DA0 SIRIUS 3RV2 Motor Starter Protect","metaDescription":"Siemens 3RV2021-0CA10-0DA0 SIRIUS 3RV2 motor starter protector, size S0, 0.18-0.25 A overload, 3.3 A short-circuit release, screw terminals, active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"title":"3RV2021-0CA10-0DA0","Group Code":"R711","description":"circuit breaker size S0 for system protection without phase failure protection A-release 0.18...0.25 A short-circuit release 3.3 A screw terminal standard switching capacity","Product Group":"5333","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"SIRIUS 3RV2 motor starter protectors","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : EAR99","Packaging dimensions (L x W x H)":"101.00 x 55.00 x 104.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 01-10-09","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ea5c943e8cddda7fd824640f7b89644.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RV2021-0CA10-0DA0?tree=CatalogTree"},"ai":{"faq":[{"question":"What is the closest alternative to 3RV2021-0CA10-0DA0 in the same family?","answer":"Within the SIRIUS 3RV2 family, the same S0 frame size and screw-terminal variant with a different overload range is the closest alternative. No pin-compatible direct substitute with identical ratings exists; select the overload range that matches your motor FLA."},{"question":"What compliance documentation does Siemens provide for 3RV2021-0CA10-0DA0?","answer":"RoHS compliance since 01-10-09 is confirmed. REACH candidate-list information is available from Siemens. UL and IEC certifications are standard for the SIRIUS 3RV2 series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-0CA10-0DA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RV2021-0CA10-0DA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}