{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2321-1DC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2321-1DC10","canonicalUrl":"https://aoctrl.com/siemens/3RV2321-1DC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2321-1DC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2321-1DC10 circuit breaker for starter combinations, 45 mm width, 100 kA breaking capacity at 400 V AC, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"Its headline breaking capacity of 100 kA at 400 V AC and at 240 V AC and 500 V AC means it safely interrupts fault currents up to that level without cascading upstream — critical for panel SCCR compliance under IEC 60947-2 and UL 508A. Clearance requirements: 50 mm upwards and downwards, 30 mm at the side, zero forwards or backwards. This allows tight panel packing in multi-circuit motor control centers, but the side clearance must be observed for arc-flash containment and heat dissipation. ## Deployment context The screw-type terminals for the main current circuit accept 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded conductors, sized for motor branch circuits up to 2 hp at 460/480 V or 575/600 V. No ground-fault or phase-failure detection built in — those functions must be handled by the upstream protection or a separate relay.","metaTitle":"Siemens 3RV2321-1DC10 SIRIUS Circuit Breaker, 100 kA at 400","metaDescription":"Siemens 3RV2321-1DC10 SIRIUS circuit breaker for starter combinations. 100 kA breaking capacity at 400 V AC, 45 mm wide, DIN-rail mount. Sourced to order against RFQ.","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","title":"3RV2321-1DC10","Height":"97 mm","Upwards":"50 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"50 mm","At The Side":"30 mm","Rated Value":"20 ... 690 V","description":"Circuit breaker size S0 for starter combination Rated current 3.2 A N release 42 A screw terminal Standard switching capacity","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","For Main Contacts":"M4","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"0.25 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"3.2 A","at 500 V rated value":"100 kA","at 600 V rated value":"3.2 A","at 690 V rated value":"10 kA","Design Of The Product":"For starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"0.1 hp","at 200/208 V rated value":"0.5 hp","at 220/230 V rated value":"0.75 hp","at 460/480 V rated value":"2 hp","at 575/600 V rated value":"2 hp","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":"10 kA","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"Pozidriv size 2","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"7.25 W","at AC-3 at 400 V rated value":"3.2 A","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"3.2 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","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 AC in hot operating state per pole":"2.4 W","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 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","For Main Contacts With Screw-Type Terminals":"2 ... 2.5 N·m","with high demand rate according to SN 31920":"50 %","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","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","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"42 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$35.56","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3dd0ad2c4c552042b5f875efe226bd48.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=182842&mlfb=3RV2321-1DC10"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2321-1DC10 at 400 V?","answer":"100 kA at 400 V AC, also 100 kA at 240 V AC and 500 V AC, dropping to 10 kA at 690 V AC."},{"question":"What are the mounting dimensions for 3RV2321-1DC10?","answer":"Width 45 mm, depth 97 mm, height 97 mm. Requires 50 mm clearance upwards and downwards, 30 mm at the side, zero forwards or backwards. Mounts on 35 mm DIN rail per DIN EN 60715."},{"question":"Where can I buy 3RV2321-1DC10?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2321-1DC10","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/3RV2321-1DC10 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}}