{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV6321-4CC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV6321-4CC10","canonicalUrl":"https://aoctrl.com/siemens/3RV6321-4CC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV6321-4CC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for starter combinations, 3RV6321-4CC10, Size S0, 22 A AC-3 at 400 V, 690 V rated, 286 A instantaneous short-circuit trip, screw terminals, 45 mm wide.","salesMarkdown":"## SIRIUS 3RV6321-4CC10 — motor branch circuit breaker for starter combinations Rated 22 A in AC-3 duty at 400 V, so it handles motor loads up to that current — typical for a 7.5 kW to 11 kW induction motor depending on service factor. The instantaneous short-circuit trip fires at 286 A, clearing faults before the contactor welds. The Size S0 frame (45 mm wide, 96 mm deep, 97 mm tall) fits standard 45 mm module spacing — one slot on the rail. Screw-type terminals on top and bottom accept 2x 1–2.5 mm² solid/stranded or 2x 2.5–10 mm², with a tightening torque of 2–2.5 N·m. The magnetic short-circuit trip is non-adjustable; the thermal overload element is set by the factory to the 22 A rating. ## Clearance and integration Requires 50 mm clearance above and below the device, 30 mm at the sides, and zero forwards or backwards — so it fits tight against the backpanel or enclosure wall. Total power loss is 8 W typical. Rated insulation voltage 690 V AC at pollution degree 3, surge voltage resistance 6 kV — suitable for 400/480 V line-to-line systems with adequate clearance. Shock resistance 25g / 11 ms per IEC 60068-2-27. RoHS compliance date is 05/01/2012. The part carries the SIRIUS brand.","metaTitle":"Siemens 3RV6321-4CC10 SIRIUS Circuit Breaker, 22 A AC-3, 690","metaDescription":"Siemens 3RV6321-4CC10 SIRIUS circuit breaker for starter combinations. 22 A AC-3 at 400 V, 690 V rated, 286 A instantaneous trip. Size S0, 45 mm wide, screw terminals. Current life","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"96 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":"690 V","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","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","Design Of The Product":"for starter combinations","For Main Current Circuit":"screw-type terminals","Size Of The Circuit-Breaker":"S0","at AC-3 rated value maximum":"690 V","power loss [W] total typical":"8 W","Substance Prohibitance (Date)":"05/01/2012","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"22 A","at AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","Relative Humidity During Operation":"10 ... 95 %","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 kV","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","For Main Contacts With Screw-Type Terminals":"2 ... 2.5 N·m","shock resistance according to IEC 60068-2-27":"25g / 11 ms","operational current at AC-3 at 400 V rated value":"22 A","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":"286 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","breaking capacity maximum short-circuit current (Icu) at AC at 400 V rated value":"55 kA","breaking capacity operating short-circuit current (Ics) at AC at 400 V rated value":"25 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8a403dfd8d5b5b0fc53dc0f5258c2fd8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621315&mlfb=3RV6321-4CC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV6321-4CC10/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the 3RV6321-4CC10?","answer":"The 3RV6021-4DA10 is a similar SIRIUS motor-protective circuit breaker in the same Size S0 frame, but its trip curve and current rating differ — verify the 22 A AC-3 setting and 286 A instantaneous trip match your coordination study before substituting."},{"question":"What are the mounting dimensions of the 3RV6321-4CC10?","answer":"Width 45 mm, depth 96 mm, height 97 mm. Requires 50 mm clearance above and below, 30 mm at the sides, zero forwards or backwards. Mounts on 35 mm DIN rail per DIN EN 60715 or screws to a backplate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV6321-4CC10","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/3RV6321-4CC10 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}}