{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2031-4WB15","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2031-4WB15","canonicalUrl":"https://aoctrl.com/siemens/3RV2031-4WB15","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4WB15","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2031-4WB15, 52 A rated current, 30 kA breaking capacity at 400 V AC, CLASS 20 trip class, screw and snap-on mounting onto 35 mm DIN rail.","salesMarkdown":"Rated at 52 A at 480 V and 52 A at 600 V, this breaker handles common North American motor sizes in those voltage classes. At 230 V it supports a 10 hp motor. The breaking capacity is 30 kA at 400 V AC, 100 kA at 240 V, and 2 kA at 690 V — so it safely interrupts fault currents up to those levels without upstream coordination issues in most industrial distribution. Trip class is CLASS 20, meaning it allows up to 20 seconds to trip under locked-rotor conditions — standard for general-purpose pumps, fans, and compressors that don't need the faster CLASS 10 protection. Maximum switching frequency is 15 operations per hour under AC-3 (motor) duty, which suits cyclic loads like conveyors or batch mixers. No ground fault detection on this variant. ## Physical fit and clearances Dimensions are 55 mm wide, 140 mm high, 149 mm deep. Terminal capacity accepts 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded copper. Main contact screws are M6.","metaTitle":"Siemens 3RV2031-4WB15 SIRIUS Motor Protection CB, 52 A, 30 k","metaDescription":"Siemens 3RV2031-4WB15 SIRIUS motor protection circuit breaker, 52 A rated current, 30 kA breaking capacity at 400 V AC. CLASS 20 trip, phase failure detection. DIN rail mount. Sour","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 24 V":"1 A","at 60 V":"0.15 A","at 110 V":"0 A","at 125 V":"0 A","at 220 V":"0 A","at 230 V":"0.5 A","at 240 V":"none required","at 400 V":"160","at 500 V":"125","at 690 V":"100","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 standard mounting rail according to DIN EN 60715","at AC-3e maximum":"15 1/h","For Main Contacts":"M6","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"10 hp","at 240 V rated value":"100 kA","at 400 V rated value":"30 kA","at 480 V rated value":"52 A","at 500 V rated value":"4 kA","at 600 V rated value":"52 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":"5 hp","at 200/208 V rated value":"15 hp","at 220/230 V rated value":"20 hp","at 460/480 V rated value":"40 hp","at 575/600 V rated value":"50 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":"8 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":"24.5 W","at AC-3 at 400 V rated value":"52 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":"52 A","Design Of The Auxiliary Switch":"transverse","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"52 A","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"screw-type terminals","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 AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","at AC in hot operating state per pole":"8.2 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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"25g / 11 ms Sinus","Electrical Endurance (Switching Cycles) Typical":"50 000","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","Size Of Contactor Can Be Combined Company-Specific":"S2","contact rating of auxiliary contacts according to UL":"C300 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A)","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"741 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":"42 ... 52 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=519388&mlfb=3RV2031-4WB15","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4WB15/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RV2031-4WB15?","answer":"Rated current 52 A at 480 V and 600 V, breaking capacity 30 kA at 400 V AC, CLASS 20 trip class, phase failure detection, and 15 operations per hour under AC-3 motor duty."},{"question":"Will the 3RV2031-4WB15 drop into a panel specified around the 3RV2021-4NA25?","answer":"Both are SIRIUS motor protection breakers on the same 35 mm DIN rail footprint, but the 3RV2031-4WB15 is a higher-current frame (52 A vs the 3RV2021 series typically covering lower ranges). Check your motor FLA and the existing buswork ampacity before swapping — the physical mounting is compatible but the electrical rating may not match."},{"question":"Where can I buy the 3RV2031-4WB15?","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 delivery commitment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2031-4WB15","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/3RV2031-4WB15 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}}