{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2031-4VA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2031-4VA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV2031-4VA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4VA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV2031-4VA10-ZX95, Class 10 trip, 30 kA interrupting capacity at 400 V, phase failure detection.","salesMarkdown":"## What this SIRIUS breaker does The interrupting capacity of 30 kA at 400 V and 100 kA at 240 V gives it enough fault-clearing muscle for most industrial distribution panels, so you don't need an upstream fuse for SCCR compliance up to those levels. The 55 mm width and 149 mm depth mean it occupies one standard 55 mm module slot on the rail — plan your gland-plate clearance accordingly, especially if the panel door has a deep interlock handle. The Class 10 trip is the one that decides motor protection fit. A Class 10 breaker is designed for motors with short acceleration times — typically pumps, fans, and compressors that reach full speed in under 10 seconds. If your motor has a high-inertia load (flywheel, centrifuge) that takes longer to start, you'd need a Class 20 or 30 breaker to avoid nuisance tripping. The maximum switching frequency at AC-3 duty is 15 operations per hour, which is fine for manual start/stop or contactor-backed control; don't use this breaker as a cycled starter for a rapid-reversing application.","metaTitle":"Siemens 3RV2031-4VA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV2031-4VA10-ZX95 motor protection circuit breaker, Class 10 trip, 30 kA at 400 V, phase failure detection, current lifecycle. Quoted to order.","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","Forwards":"0 mm","at 240 V":"none required","at 400 V":"125","at 500 V":"100","at 690 V":"80","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","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 (1 ... 25 mm²), 1x (1 ... 35 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":"45 A","at 500 V rated value":"5 kA","at 600 V rated value":"45 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":"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":"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":"24.5 W","at AC-3 at 400 V rated value":"45 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":"45 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"45 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":"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 (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 (Switching 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":"650 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":"35 ... 45 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=208669&mlfb=3RV2031-4VA10-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2031-4VA10-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 3RV2031-4VA10-ZX95?","answer":"The closest functional peer is 3RV2021-4NA25. Both are SIRIUS motor protection circuit breakers with Class 10 trip and phase failure detection, but the 3RV2021-4NA25 has a lower interrupting capacity (typically 25 kA at 400 V) and a different thermal setting range. If your fault current requirement is under 25 kA and the motor FLA fits the 3RV2021-4NA25's adjustment range, it can be a drop-in replacement on the same DIN rail footprint — but verify the thermal setting overlap before swapping."},{"question":"How do I get current pricing and availability for 3RV2031-4VA10-ZX95?","answer":"Pricing and availability are confirmed at the time of quote. Submit an RFQ for this order code and we will return current lead time and per-unit pricing through our distribution channels."},{"question":"Will 3RV2031-4VA10-ZX95 drop into a panel specified around 3RV2021-4NA25 without rewiring?","answer":"Yes, the 55 mm width and DIN-rail mounting are identical, so the mechanical fit is the same. The main-terminal screw-type connectors accept the same conductor sizes (2x 1–25 mm² solid/stranded, 1x 1–35 mm²). No rewiring is needed for the power circuit, but verify that the interrupting capacity of 30 kA at 400 V meets your panel's SCCR — if the original spec was built around the 3RV2021-4NA25's lower rating, the 3RV2031-4VA10-ZX95 actually gives you more headroom."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2031-4VA10-ZX95","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/3RV2031-4VA10-ZX95 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}}