{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2031-4PB15","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2031-4PB15","canonicalUrl":"https://aoctrl.com/siemens/3RV2031-4PB15","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4PB15","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2031-4PB15, Trip Class 20, 30 kA breaking capacity at 400 V AC, phase failure detection, screw and snap-on DIN rail mounting.","salesMarkdown":"## Motor Protection Circuit Breaker for 400 V Panels It is rated for Trip Class 20, meaning it allows a 20-second overload duration at locked-rotor current before tripping — standard for general-purpose conveyors, pumps, and fans that don't need the fast trip of Class 10 or the extended ramp of Class 30. At 400 V, the 3RV2031-4PB15 delivers 30 kA breaking capacity, which is the common requirement for IEC motor control centers backed by a 400 V transformer. The interrupting rating at 500 V is 5 kA, and at 690 V it is 2 kA, which limits application on 690 V systems to low-fault-current scenarios. Dimensions are 55 mm wide, 140 mm high, and 149 mm deep — the 55 mm width is a single modular unit, so it occupies one 55 mm slot on the DIN rail. Main contact terminals accept M6 bolts, and the conductor cross-section ranges from 2x 0.5 mm² up to 2x 2.5 mm² solid or stranded. ## Switching Frequency and Auxiliary Ratings Maximum switching frequency under AC-3 and AC-3e duty is 15 operations per hour — adequate for motor start-stop cycles in material handling and conveyor applications, but not for high-speed jogging or reversing. Auxiliary contact ratings: 1 A at 24 V, 0.15 A at 60 V, 0.5 A at 230 V. At 110 V, 125 V, and 220 V the rated current is 0 A, meaning no auxiliary contact is available at those voltages — verify the control voltage before specifying.","metaTitle":"Siemens 3RV2031-4PB15 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens SIRIUS 3RV2031-4PB15 motor protection circuit breaker, Trip Class 20, 30 kA breaking capacity at 400 V AC, phase failure detection, current lifecycle. Sourced to order agai","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":"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 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":"7.5 hp","at 240 V rated value":"100 kA","at 400 V rated value":"30 kA","at 480 V rated value":"36 A","at 500 V rated value":"5 kA","at 600 V rated value":"36 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":"36 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":"36 A","Design Of The Auxiliary Switch":"transverse","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"36 A","at AWG cables for main contacts":"2x (18 ... 3), 1x (18 ... 2)","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":"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 (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":"520 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":"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=439421&mlfb=3RV2031-4PB15","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4PB15/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RV2031-4PB15?","answer":"As a Siemens SIRIUS product, the 3RV2031-4PB15 is designed to meet IEC/EN 60947-4-1 for motor protection circuit breakers. Compliance documentation typically includes CE declaration, RoHS and REACH statements, and UL/CSA recognition where applicable. Specific certificates should be requested at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2031-4PB15","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/3RV2031-4PB15 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}}