{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2321-1FC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2321-1FC10","canonicalUrl":"https://aoctrl.com/siemens/3RV2321-1FC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2321-1FC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for starter combinations, 3RV2321-1FC10, 45 mm width, 97 mm depth, 100 kA breaking capacity at 400 V AC, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"## SIRIUS 3RV2321-1FC10 — Motor Circuit Breaker for Starter Combinations ## Breaking Capacity and Motor Ratings Breaking capacity holds at 100 kA across the common industrial voltages: 240 V, 400 V, and 500 V AC. Motor horsepower ratings span 0.17 hp at 110/120 V up to 3 hp at 460/480 V and 575/600 V, covering fractional to medium motor loads common in conveyor, pump, and fan applications. The 45 mm width occupies two standard 22.5 mm module spaces. Clearance requirements: 50 mm upwards and downwards, 30 mm at the side, zero forwards or backwards — so it can be placed flush against a backplate or enclosure wall. Main contact terminals accept M4 screws and 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded wire. ## Environmental and Operating Conditions Rated insulation voltage spans 20 to 690 V, covering low-voltage control circuits through 690 V motor feeds. The part does not include ground fault or phase failure detection — those functions must be provided externally if required by the application.","metaTitle":"Siemens 3RV2321-1FC10 SIRIUS Circuit Breaker, 100 kA at 400","metaDescription":"Siemens SIRIUS 3RV2321-1FC10 circuit breaker for starter combinations. 100 kA breaking capacity at 400 V AC. Screw/snap-on 35 mm DIN rail. Current production. Sourced to order.","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":"97 mm","Upwards":"50 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"50 mm","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 DIN 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":"0.5 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"5 A","at 500 V rated value":"100 kA","at 600 V rated value":"5 A","at 690 V rated value":"4 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":"0.17 hp","at 200/208 V rated value":"1 hp","at 220/230 V rated value":"1 hp","at 460/480 V rated value":"3 hp","at 575/600 V rated value":"3 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":"6 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":"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":"5 A","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"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 (Operating 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":"65 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"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=436007&mlfb=3RV2321-1FC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2321-1FC10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV2321-1FC10 at 400 V?","answer":"100 kA at 400 V AC, which is the same rating at 240 V and 500 V AC. At 690 V AC the capacity is 4 kA."},{"question":"What motor sizes does 3RV2321-1FC10 protect?","answer":"It covers motors from 0.17 hp at 110/120 V up to 3 hp at 460/480 V and 575/600 V. At 230 V it is rated 0.5 hp; at 200/208 V, 1 hp."},{"question":"Does 3RV2321-1FC10 include ground fault or phase failure detection?","answer":"No. Ground fault detection and phase failure detection are not built in. These functions must be provided by an external device if required."},{"question":"Where can I buy 3RV2321-1FC10 and get current pricing?","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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2321-1FC10","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/3RV2321-1FC10 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}}