{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2031-4UB10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2031-4UB10","canonicalUrl":"https://aoctrl.com/siemens/3RV2031-4UB10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4UB10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2031-4UB10, 55 mm width, CLASS 20 trip, 30 kA at 400 V, screw and snap-on DIN rail mounting.","salesMarkdown":"## Motor protection circuit breaker, 55 mm, CLASS 20 trip Its CLASS 20 trip characteristic provides a 20-second overload response at 7.2× I_e, matching the thermal curve of standard NEMA-design B and IEC motors. The 55 mm width (3.5 module spaces on a 35 mm DIN rail per DIN EN 60715) and 149 mm depth fit standard motor-starter footprints. Screw-type terminals on the main circuit accept 2× (1 to 25 mm²) or 1× (1 to 35 mm²) solid or stranded copper — no ferrule required for the larger cross-section. ## Clearance and mounting Clearance requirements vary with system voltage: at 240 V no clearance is required; at 400 V allow 125 mm upwards and 50 mm downwards; at 500 V allow 100 mm upwards; at 690 V allow 80 mm upwards. Side clearance is 10 mm. These distances ensure arc-fault containment and thermal dissipation — critical when the breaker is packed into a dense panel.","metaTitle":"Siemens 3RV2031-4UB10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens SIRIUS 3RV2031-4UB10 motor protection circuit breaker, 55 mm width, CLASS 20 trip, 30 kA at 400 V. Current production. 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":"125","at 500 V":"100","at 690 V":"80","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":"-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":"M6","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 25 mm²), 1x (1 ... 35 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"7.5 hp","at 240 V rated value":"100 kA","at 400 V rated value":"30 kA","at 480 V rated value":"40 A","at 500 V rated value":"5 kA","at 600 V rated value":"40 A","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","at 110/120 V rated value":"3 hp","at 200/208 V rated value":"15 hp","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"30 hp","at 575/600 V rated value":"40 hp","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"65 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":"50 000","at AC in hot operating state":"20 W","at AC-3 at 400 V rated value":"40 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"50 000","Substance Prohibitance (Date)":"10/15/2014","at AC-3e at 400 V rated value":"40 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"40 A","at AWG cables for main contacts":"2x (18 ... 3), 1x (18 ... 2)","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":"6.7 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 ... 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 %","shock resistance according to IEC 60068-2-27":"25g / 11 ms Sinus","Electrical Endurance (Operating Cycles) Typical":"50 000","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":"585 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"32 ... 40 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$120.65","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=210673&mlfb=3RV2031-4UB10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4UB10/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV2031-4UB10's width and depth?","answer":"The width is 55 mm and the depth is 149 mm, fitting a standard 3.5-module DIN-rail footprint."},{"question":"What breaking capacity does 3RV2031-4UB10 have at 400 V?","answer":"30 kA at 400 V AC, sufficient for most industrial service-entrance and distribution panels."},{"question":"Where can I buy 3RV2031-4UB10 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does 3RV2031-4UB10 include phase failure detection?","answer":"Yes, phase failure detection is built in; ground fault detection is not."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2031-4UB10","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/3RV2031-4UB10 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}}