{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1321-0DC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1321-0DC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1321-0DC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0DC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1321-0DC10 circuit breaker for starter combinations, 0.32 A rated continuous current, 100 kA breaking capacity at 400 V AC, 3-pole, screw terminals, IP20 front.","salesMarkdown":"Rated continuous current sits at 0.32 A, with a symmetrical breaking capacity of 100 kA at 400 V AC, 500 V AC, and 690 V AC. That 100 kA rating holds across the voltage band, so it handles high-fault-current scenarios without derating the interrupt rating at higher voltages — a useful trait when the panel feeds a transformer or a long bus run. RoHS compliance date is 01.05.2012, so it meets the EU RoHS directive. The part carries no ground fault or phase failure detection — it's a straight thermal-magnetic overload and short-circuit protector for the motor branch. If your BOM requires those detection functions, you'd need a separate monitoring relay or a different SIRIUS variant. Solid and stranded conductors: 2x (1... 2.5 mm²) or 2x (2.5... 6 mm²) per terminal. AWG equivalents: 2x (14... 10). That's enough for the 0.32 A load — 1.5 mm² is plenty, but the terminal also accepts up to 6 mm² for daisy-chaining or feed-through. Finely stranded with core-end processing uses the same range. Power dissipation at AC in hot operating state is 5.5 W total, 1.8 W per pole. That's low enough that no special ventilation is needed in a standard IP20 enclosure, but if you're stacking multiple units side-by-side with zero spacing, the cumulative heat adds up — the 0 mm side clearance spec means you can butt them, but watch the ambient inside the panel.","metaTitle":"Siemens 3RV1321-0DC10 SIRIUS Circuit Breaker, 0.32 A, 100 kA","metaDescription":"Siemens 3RV1321-0DC10 SIRIUS circuit breaker for starter combinations. 0.32 A continuous current, 100 kA breaking capacity at 400 V AC. DIN rail mount, IP20 front. Current lifecycl","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","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":"0.09 kW","Design Of The Product":"for starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","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":"100 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"5.5 W","Substance Prohibitance (Date)":"01.05.2012 00:00:00","Continuous Current Rated Value":"0.32 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":"1.8 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":"0.32 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"magnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Function Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"100 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=163060&mlfb=3RV1321-0DC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0DC10/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RV1321-0DC10?","answer":"The 3RV1011-0GA10 is a common peer in the SIRIUS family, but it's a different frame size and current rating. The 3RV1321-0DC10 is a 0.32 A unit with 100 kA breaking capacity; the 3RV1011-0GA10 covers a different current band. They are not drop-in replacements — check the specific overload and short-circuit protection curve for your motor before swapping."},{"question":"What compliance documentation does Siemens provide for 3RV1321-0DC10?","answer":"The part carries RoHS compliance dated 01.05.2012. It is designed to meet IEC/EN 60947-2 and 60947-4-1 standards for circuit breakers and motor starters. UL and CSA listings are typical for the SIRIUS family, but specific certification marks for this order code should be confirmed on the nameplate or via Siemens documentation."},{"question":"Where can I buy 3RV1321-0DC10 and get current pricing?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send an RFQ for a live number. No stock count or price is listed here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1321-0DC10","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/3RV1321-0DC10 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}}