{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-1EA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-1EA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-1EA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1EA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1021-1EA10 motor protection circuit breaker, 4 A rated continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC, screw-type terminals, IP20 front face.","salesMarkdown":"It carries a continuous current rating of 4 A and a trip class of CLASS 10, meaning it will trip within 10 seconds at 7.2x the current setting — fast enough to protect standard induction motors during a locked-rotor event without nuisance tripping on normal starts. No ground fault detection on this variant, so pair it with a separate ground-fault relay if that's required by code. The 45 mm width takes up a single 9 mm module equivalent on the rail — five of these fit in a standard 225 mm wide enclosure row. Screw-type terminals on both main and auxiliary circuits accept solid or stranded wire: 2x (1 … 2.5 mm²) or 2x (2.5 … 6 mm²) per clamp. AWG equivalents are 2x (14 … 10). Finely stranded wire with ferrule is handled the same way — no special tooling needed beyond a standard screwdriver. Mounting position is any orientation. Shock resistance rated at 25g / 11 ms, so it holds up in mobile equipment or near vibrating machinery. RoHS compliance is indicated by the substance prohibition date of 01.05.2012, which aligns with the EU RoHS directive. No UL or CSA listing is stated in the spec record, so verify jurisdictional acceptance if your project requires those marks. ## Power Dissipation and Duty Cycle That's modest — no forced cooling needed in a standard IP20 enclosure, but account for it in thermal calculations if you're packing multiple units in a small cabinet. Maximum operating frequency in AC-3 duty is 15 operations per hour. That's fine for motor starting in pump or fan applications; don't use it for frequent jogging or reversing cycles without checking the thermal accumulation.","metaTitle":"Siemens 3RV1021-1EA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV1021-1EA10 SIRIUS motor protection circuit breaker, 4 A continuous current, Class 10 trip, 100 kA breaking capacity at 400 V AC. Screw terminals, IP20 front. Available t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"96 mm","Solid":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Width":"45 mm","Height":"97 mm","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Backwards":"0 mm","Trip Class":"CLASS 10","At The Side":"0 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","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 50022","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"1.5 kW","Design Of The Product":"for motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","at AC at 500 V rated value":"100 kA","at AC at 690 V rated value":"6 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"7.25 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"4 A","at AWG cables for main contacts":"2x (14 ... 10)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AC in hot operating state per pole":"2.4 W","Finely Stranded With Core End Processing":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"4 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"thermomagnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"100 000","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"2.8 ... 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$68.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=343936&mlfb=3RV1021-1EA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1EA10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3RV1021-1EA10 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the 3RV1021-1EA10's depth?","answer":"The depth is 96 mm. Width is 45 mm, height is 97 mm. It fits a standard 35 mm DIN rail with zero clearance needed at the back or sides."},{"question":"What wire sizes does the 3RV1021-1EA10 accept?","answer":"Screw terminals accept solid or stranded wire: 2x (1 … 2.5 mm²) or 2x (2.5 … 6 mm²) per clamp. AWG equivalents are 2x (14 … 10). Finely stranded with ferrule is also supported."},{"question":"Will the 3RV1021-1EA10 drop into a panel designed for a 3RV1011-0GA10?","answer":"Both are 45 mm wide SIRIUS breakers on the same DIN rail footprint, so the mechanical fit is the same. The 3RV1021-1EA10 is a 4 A Class 10 unit; the 3RV1011-0GA10 is a different current rating. Verify the motor FLA matches the 4 A setting before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-1EA10","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/3RV1021-1EA10 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}}