{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-4PA15-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-4PA15-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-4PA15-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4PA15-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-4PA15-ZX95 motor protection circuit breaker, Trip Class 10, 45 mm width, 10 kA breaking capacity at 400 V, phase failure detection, screw and snap-on DIN rail mounting.","salesMarkdown":"Width is 45 mm, depth 97 mm, height 97 mm — a standard 45 mm module that fits a 35 mm DIN rail per DIN EN 60715. The mounting method is screw and snap-on, so it clips onto the rail and can be screwed down for vibration environments. Clearances: 70 mm upward and downward, 30 mm at the side. That side clearance is tight enough that adjacent breakers can sit without forced spacing, but the 70 mm vertical is the minimum for cable bend radius and heat dissipation. Screw-type terminals for the main circuit, accepting 2x (0.5...1.5 mm²) or 2x (0.75...2.5 mm²) solid or stranded.","metaTitle":"Siemens 3RV2021-4PA15-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens 3RV2021-4PA15-ZX95 SIRIUS motor protection circuit breaker. Trip Class 10, 10 kA at 400 V, phase failure detection. 45 mm wide, DIN rail mount. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"97 mm","Width":"45 mm","Height":"97 mm","Upwards":"70 mm","at 24 V":"1 A","at 60 V":"0.15 A","Forwards":"0 mm","at 120 V":"0.5 A","at 125 V":"0.5 A","at 230 V":"0.5 A","at 400 V":"gG 63 A","at 500 V":"gG 63 A","at 690 V":"gG 63 A","Backwards":"0 mm","Downwards":"70 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","During Storage":"-50 ... +80 °C","at AC-3 maximum":"15 1/h","lifecycle_stage":"current","During Operation":"-20 ... +40 °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":"M4","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":"5 hp","at 240 V rated value":"100 kA","at 400 V rated value":"10 kA","at 480 V rated value":"36 A","at 500 V rated value":"3 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","Temperature Compensation":"-20 ... +60 °C","at 110/120 V rated value":"3 hp","at 200/208 V rated value":"10 hp","at 220/230 V rated value":"10 hp","at 460/480 V rated value":"25 hp","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"20 kA","at AC at 500 V rated value":"6 kA","at AC at 690 V rated value":"3 kA","Design Of Screwdriver Shaft":"Diameter 5 to 6 mm","Size Of The Circuit-Breaker":"S0","Size Of The Screwdriver Tip":"Pozidriv size 2","at AC-3 rated value maximum":"690 V","Of The Main Contacts Typical":"100 000","at AC in hot operating state":"16.25 W","at AC-3 at 400 V rated value":"36 A","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","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 (16 ... 12), 2x (14 ... 8)","Design Of The Short-Circuit Trip":"magnetic","For Auxiliary And Control Circuit":"screw-type terminals","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 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":"5.4 W","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":"2 ... 2.5 N·m","with high demand rate according to SN 31920":"50 %","number of CO contacts for auxiliary contacts":"0","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","Electrical Endurance (Switching Cycles) Typical":"100 000","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","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 gL/gG: 10 A, miniature circuit breaker C 6 A (short-circuit current Ik < 400 A)","Response Value Current Of Instantaneous Short-Circuit Trip Unit":"432 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":"30 ... 36 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69e3aae776a3a972c11948ccacc118a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=410171&mlfb=3RV2021-4PA15-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2021-4PA15-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV2021-4PA15-ZX95?","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":"What is the breaking capacity of 3RV2021-4PA15-ZX95?","answer":"The breaking capacity is 10 kA at 400 V. It also carries ratings of 100 kA at 240 V, 3 kA at 500 V, and 2 kA at 690 V."},{"question":"Does 3RV2021-4PA15-ZX95 detect phase failure?","answer":"Yes, phase failure detection is built in. It will trip if one phase is lost, protecting the motor from single-phasing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-4PA15-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/3RV2021-4PA15-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}}