{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1321-0BC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1321-0BC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1321-0BC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0BC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1321-0BC10 circuit breaker for starter combinations, 0.2 A rated continuous current, 100 kA breaking capacity at 400 V AC, 690 V rated voltage, 3-pole, screw terminals, DIN rail mount.","salesMarkdown":"The Siemens 3RV1321-0BC10 is a SIRIUS circuit breaker designed for starter combinations — meaning it's sized to protect a motor branch circuit, not just a general distribution feeder. Its continuous current rating is 0.2 A, so it's for small motors or control transformers, not main power feeds. Finger-safe touch protection (IP20 on the front) keeps panel builders out of trouble during commissioning. Mounting position is any orientation. Zero clearance needed at the sides or rear — 0 mm backwards, 0 mm at the side — so you can pack it tight in a panel without derating. Dimensions: 45 mm wide, 97 mm high, 96 mm deep. That 96 mm depth is the can-body length behind the panel; factor it into enclosure depth when the door closes. The 0.2 A continuous rating is the key selector — this is not a general-purpose branch breaker. It's sized for a fractional-horsepower motor or a small control transformer primary. Operating frequency max is 15 operations per hour in AC-3 duty — fine for infrequent start/stop, not for a rapid-cycling application. Power dissipation is 5.5 W hot (1.8 W per pole), which matters for thermal management in a sealed enclosure. Terminal capacity: accepts 2x (1 to 2.5 mm²) solid or stranded, or 2x (2.5 to 6 mm²) — covers standard motor leads up to about 10 AWG. Shock rated at 25g for 11 ms, so it survives in a machine-mounted panel near a press or conveyor drive.","metaTitle":"Siemens 3RV1321-0BC10 SIRIUS Circuit Breaker, 0.2 A, 100 kA","metaDescription":"Siemens 3RV1321-0BC10 SIRIUS circuit breaker for starter combinations. 0.2 A continuous, 100 kA breaking at 400 V, 690 V rated. DIN rail mount. Available to order.","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":"0.06 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":"0.2 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":"0.2 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=437004&mlfb=3RV1321-0BC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1321-0BC10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1321-0BC10 at 400 V?","answer":"100 kA at 400 V AC, and the same 100 kA at 240 V, 500 V, and 690 V — full-rated SCCR across the voltage range."},{"question":"Where can I buy 3RV1321-0BC10?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"Will 3RV1321-0BC10 drop into a panel specified around 3RV6011-0CA10?","answer":"Both are 45 mm wide SIRIUS breakers on 35 mm DIN rail, so the footprint and rail clip are the same. The 3RV1321-0BC10 is the starter-combination design variant; the 3RV6011-0CA10 is a different series with different accessories. Check the auxiliary contact arrangement and terminal layout before swapping — the screw terminals are similar but the accessory slot may differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1321-0BC10","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/3RV1321-0BC10 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}}