{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-4AA25-ZW97","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-4AA25-ZW97","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-4AA25-ZW97","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4AA25-ZW97","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2021-4AA25-ZW97, Trip Class 10, 25 kA breaking capacity at 400 V, phase failure detection, spring-loaded terminals, 45 mm width.","salesMarkdown":"## Motor protection circuit breaker — SIRIUS 3RV2021-4AA25-ZW97 The 45 mm width keeps it compact on the rail, and the 97 mm depth fits standard enclosure depths. At 400 V, the 25 kA SCCR handles fault currents from a typical 630 kVA transformer secondary. For higher fault levels, the 690 V rating drops to 2 kA — that's the limit without series fusing. The 240 V rating of 100 kA is relevant for North American 277/480 V panels where the line-to-neutral fault can be high. The gL/gG fuse ratings at 400 V (63 A), 500 V (50 A), and 690 V (40 A) tell you the maximum backup fuse that preserves coordination. Stay within those for selective tripping downstream. The spring-loaded terminals accept 2x 0.5 to 2.5 mm² solid or stranded. Clearance: 50 mm above and below, 30 mm to the side, zero front/back — tight panel layouts work. Temperature compensation is active across the full operating range, so the thermal trip curve stays accurate in a warm enclosure.","metaTitle":"Siemens 3RV2021-4AA25-ZW97 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV2021-4AA25-ZW97 motor protection circuit breaker. Trip Class 10, 25 kA breaking capacity at 400 V, phase failure detection. Current lifecycle stage. Available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"97 mm","Width":"45 mm","Height":"119 mm","Upwards":"50 mm","at 24 V":"1 A","at 60 V":"0.15 A","Forwards":"0 mm","at 120 V":"0.5 A","at 125 V":"0.5 A","at 230 V":"0.5 A","at 400 V":"gL/gG 63 A","at 500 V":"gL/gG 50 A","at 690 V":"gL/gG 40 A","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"2 hp","at 240 V rated value":"100 kA","at 400 V rated value":"25 kA","at 480 V rated value":"16 A","at 500 V rated value":"5 kA","at 600 V rated value":"16 A","at 690 V rated value":"2 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"spring-loaded terminals","Temperature Compensation":"-20 ... +60 °C","at 110/120 V rated value":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"5 hp","at 460/480 V rated value":"10 hp","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"55 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","Design Of Screwdriver Shaft":"Diameter 3 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"3,0 x 0,5 mm","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"9.25 W","at AC-3 at 400 V rated value":"16 A","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","Design Of The Auxiliary Switch":"transverse","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"16 A","at AWG cables for main contacts":"2x (18 ... 8)","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"spring-loaded terminals","Between Main And Auxiliary Circuit":"400 V","Product Extension Auxiliary Switch":"Yes","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Handle","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","at AC in hot operating state per pole":"3.1 W","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"Yes","with low demand rate according to SN 31920":"50 FIT","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","with high demand rate according to SN 31920":"50 %","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"25g / 11 ms","Electrical Endurance (Switching Cycles) Typical":"100 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","contact rating of auxiliary contacts according to UL":"C300 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"Fuse gL/gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A)","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"208 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"10 ... 16 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e3aae776a3a972c11948ccacc118a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=806721&mlfb=3RV2021-4AA25-ZW97","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4AA25-ZW97/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RV2021-4AA25-ZW97 and get a price?","answer":"We source it to order against an RFQ. Availability and current pricing are confirmed at quote time — submit a request and we'll get back to you with a firm quote."},{"question":"What is the depth of the 3RV2021-4AA25-ZW97?","answer":"97 mm depth, 45 mm width, 119 mm height. Fits standard 150 mm deep enclosures with room for wiring."},{"question":"Will the 3RV2021-4AA25-ZW97 drop into a panel specified for the 3RV1011-1HA10?","answer":"Both are SIRIUS motor protection breakers on 45 mm width, but the 3RV2021 series has a higher breaking capacity (25 kA vs lower on the 1011 series). Check the depth — the 2021 is 97 mm, while the 1011 is typically shallower. Terminal type may differ; the 2021 uses spring-loaded terminals on the main circuit."},{"question":"What compliance documentation is available for the 3RV2021-4AA25-ZW97?","answer":"As a standard Siemens SIRIUS product, it carries CE marking and is designed to IEC/EN 60947-2 and 60947-4-1. RoHS and REACH declarations are available on request. UL/CSA listings are typical for the series but should be confirmed for this specific order code variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-4AA25-ZW97","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/3RV2021-4AA25-ZW97 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}