{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2321-1CC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2321-1CC10","canonicalUrl":"https://aoctrl.com/siemens/3RV2321-1CC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2321-1CC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2321-1CC10 circuit breaker, for starter combinations, 100 kA breaking capacity at 400 V AC, screw and snap-on DIN rail mount.","salesMarkdown":"It's not a general-purpose feeder breaker; the design of the product is for starter combinations, so it's sized and coordinated for motor starting duty. Width is 45 mm; depth is 97 mm. The breaking capacity is the headline number here: 100 kA at 240 V AC, 400 V AC, and 500 V AC, dropping to 10 kA at 690 V AC. That 100 kA at 400 V is what lets this breaker sit on a high-fault panel bus without needing upstream current-limiting fuses — it's rated to interrupt a 100 kA fault directly. The 10 kA at 690 V still covers most industrial motor branch circuits at that voltage. ## Motor sizing and coordination The horsepower ratings tell you what motor this breaker protects: 0.5 hp at 200/208 V and 220/230 V, 1 hp at 460/480 V, and 1.5 hp at 575/600 V. For a 1 hp 460 V motor drawing roughly 1.4 A FLA, this breaker gives headroom; for a 2 hp motor, you'd step up. Rated insulation voltage: 20 to 690 V. Operating temperature: -20 to +60 °C. Clearance distances are specified: 50 mm above and below, 30 mm to the side, 0 mm forward and backward. That 0 mm forward means the breaker can be mounted flush against the back panel or a busbar without extra spacing. The 50 mm vertical clearance is for arc venting and wiring bend radius — don't crowd it. Terminals are screw-type for the main current circuit, accepting 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded wire. M4 screw size on the main contacts. No ground fault or phase failure detection built in — that's handled by the upstream protection or a separate monitoring relay if needed.","metaTitle":"Siemens 3RV2321-1CC10 SIRIUS Circuit Breaker, 100 kA at 400","metaDescription":"Siemens 3RV2321-1CC10 SIRIUS circuit breaker for starter combinations. 100 kA breaking capacity at 400 V AC. Screw and snap-on DIN rail mount. Current production. Request a quote.","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":"3RV2321-1CC10","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 2.5 A N-release 33 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","at AC-3e maximum":"15 1/h","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":"0.17 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"2.5 A","at 500 V rated value":"100 kA","at 600 V rated value":"2.5 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 200/208 V rated value":"0.5 hp","at 220/230 V rated value":"0.5 hp","at 460/480 V rated value":"1 hp","at 575/600 V rated value":"1.5 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":"2.5 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"2.5 A","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"2.5 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","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","With Side-By-Side Mounting At The Side":"0 mm","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":"33 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b69a714c69c0d4793504f3f1171491b7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=174902&mlfb=3RV2321-1CC10"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RV2321-1CC10?","answer":"As a current-production SIRIUS component, standard documentation includes a CE declaration of conformity and the product datasheet. RoHS and REACH compliance data is available through Siemens Industry Online Support. The part carries UL and CSA approvals for North American installations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2321-1CC10","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/3RV2321-1CC10 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}}