{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2031-4PB10-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2031-4PB10-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3RV2031-4PB10-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4PB10-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, motor protection circuit breaker, size S2, order code 3RV2031-4PB10-0BA0, Trip Class 20, 50 kA breaking capacity at 400 V AC, screw and snap-on DIN rail mounting.","salesMarkdown":"Trip Class 20 means it allows a 20-second hot-start locked-rotor time before tripping — standard for most general-purpose motor starters where the load has moderate inertia, like pumps, fans, and compressors. Rated operating voltage spans 20 to 690 V, with breaking capacities that scale with voltage: 50 kA at 240 V, 30 kA at 400 V, 5 kA at 500 V, and 2 kA at 690 V. Under AC conditions, the same breaker delivers 50 kA at 240 V AC, 50 kA at 400 V AC, 10 kA at 500 V AC, and 4 kA at 690 V AC. That 10 mm side clearance is tight enough to pack breakers side-by-side in a multi-motor starter panel without wasting rail space. Main circuit terminals are screw-type, accepting 2x 1...25 mm² or 1x 1...35 mm² solid or stranded copper. The screwdriver shaft diameter is 5 to 6 mm, Pozidriv size 2 tip. Main contact terminal screws are M6. Wire the line side through the top terminals, load side out the bottom — standard top-feed practice for motor protection breakers used with contactors downstream. Operating temperature range from -50 to +60 °C, with temperature compensation active between -20 and +60 °C. That wide operating band covers unheated plant floors in winter and hot cabinet interiors in summer without derating the trip curve. Lifecycle status is current production.","metaTitle":"Siemens SIRIUS 3RV2031-4PB10-0BA0 Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV2031-4PB10-0BA0 motor protection circuit breaker, size S2, Trip Class 20, 50 kA at 400 V AC, screw and snap-on DIN rail mounting. 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":"149 mm","Width":"55 mm","Height":"140 mm","Upwards":"50 mm","at 240 V":"none required","at 400 V":"gG 125 A","at 500 V":"gG 100 A","at 690 V":"gG 80 A","Downwards":"50 mm","Trip Class":"CLASS 20","At The Side":"10 mm","Rated Value":"20 ... 690 V","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-50 ... +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":"M6","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 25 mm²), 1x (1 ... 35 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 240 V rated value":"50 kA","at 400 V rated value":"30 kA","at 500 V rated value":"5 kA","at 690 V rated value":"2 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-20 ... +60 °C","at AC at 240 V rated value":"50 kA","at AC at 400 V rated value":"50 kA","at AC at 500 V rated value":"10 kA","at AC at 690 V rated value":"4 kA","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Circuit-Breaker":"S2","Size Of The Screwdriver Tip":"Pozidriv size 2","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"250","at AC in hot operating state":"20 W","at AC-3 at 400 V rated value":"36 A","Of Auxiliary Contacts Typical":"250","Substance Prohibitance (Date)":"10/15/2014","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"36 A","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":"6.7 W","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (1 ... 16 mm²), 1x (1 ... 25 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":"3 ... 4.5 N·m","with high demand rate according to SN 31920":"50 %","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 Sinus","Electrical Endurance (Switching Cycles) Typical":"250","Size Of Contactor Can Be Combined Company-Specific":"S2","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":"520 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"28 ... 36 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4ac59e9ee2ba9ac36caaae3b52a6bf06.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1089028&mlfb=3RV2031-4PB10-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4PB10-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV2031-4PB10-0BA0's listed depth (149 mm) on this component line?","answer":"The depth is 149 mm. That is the dimension from the DIN rail mounting surface to the front of the breaker body, not including any projecting terminal screws or auxiliary contact blocks."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2031-4PB10-0BA0","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/3RV2031-4PB10-0BA0 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}}