{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-0GA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-0GA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-0GA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-0GA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-0GA10-ZX95 motor protection circuit breaker, size S0, 100 kA breaking capacity at 400 V, Class 10 trip, phase failure detection, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"It is a current-production part (lifecycle stage: current) from Siemens, meaning it remains in the active catalog and is not subject to a last-time-buy notice. The S0 frame measures 45 mm wide, 97 mm deep, and 97 mm high — a standard footprint that fits existing S0 backplanes without panel rework. Clearance: 50 mm above and below, 30 mm to the side; no space needed forward or backward. Main circuit terminals accept screw-type connections: 2× (1…2.5 mm²) or 2× (2.5…10 mm²) solid or stranded. Use a Pozidriv size 2 screwdriver, shaft diameter 5–6 mm. The M4 main contact screws are standard for the S0 class. ## Ratings and so-what If one phase drops out, the breaker trips, preventing single-phasing damage to the motor winding. Ground fault detection is not included, so additional protection is needed for earth-fault-sensitive circuits. Rated operational voltage covers 20…690 V AC, covering most low-voltage industrial supplies. The 100 kA breaking capacity holds at 240 V, 400 V, 500 V, and 690 V AC — a flat high-interrupting rating across the voltage range, simplifying coordination studies. The 15 cycles per hour maximum at AC-3 duty (motor switching) sets the mechanical endurance limit for repetitive start-stop applications.","metaTitle":"Siemens 3RV2021-0GA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens 3RV2021-0GA10-ZX95 SIRIUS motor protection circuit breaker, size S0, 100 kA breaking capacity at 400 V, Class 10 trip, phase failure detection. 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":"97 mm","Width":"45 mm","title":"3RV2021-0GA10-ZX95","Height":"97 mm","Upwards":"50 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"50 mm","Trip Class":"CLASS 10","At The Side":"30 mm","Rated Value":"20 ... 690 V","description":"Circuit breaker size S0 for motor protection, Class 10 A-release 0.45...0.63 A N-release 8.2 A Screw terminal Standard switching capacity Reusable packaging Pack = 43 units","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":"M4","Mounting Position":"any","Solid Or Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Circuit breaker","at 230 V rated value":"0.1 kW","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"0.63 A","at 500 V rated value":"100 kA","at 600 V rated value":"0.63 A","at 690 V rated value":"100 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","at AC at 500 V rated value":"100 kA","at AC at 690 V rated value":"100 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":"7.25 W","at AC-3 at 400 V rated value":"0.63 A","at AC-3e rated value maximum":"690 V","Of Auxiliary Contacts Typical":"100 000","Substance Prohibitance (Date)":"10/01/2009","at AC-3e at 400 V rated value":"0.63 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"0.63 A","Design Of The Short-Circuit Trip":"magnetic","for AWG cables for main contacts":"2x (16 ... 12), 2x (14 ... 8)","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":"2.4 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 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 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":"0","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"25g / 11 ms","Electrical Endurance (Operating Cycles) Typical":"100 000","Size Of Contactor Can Be Combined Company-Specific":"S00, S0","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":"8.2 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":"0.45 ... 0.63 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=350874&mlfb=3RV2021-0GA10-ZX95"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RV2021-0GA10-ZX95?","answer":"Submit an RFQ through the storefront. Pricing and stock are confirmed at quote time; the part is sourced to order through independent distribution."},{"question":"Will 3RV2021-0GA10-ZX95 drop into a panel specified around 3RV2011-0AA10 without rewiring?","answer":"Both are S0-frame breakers with the same 45 mm width and 97 mm depth, so the physical footprint and DIN-rail mounting are identical. Terminal sizes (M4, 2× 1…10 mm²) are also the same. However, the 3RV2021-0GA10-ZX95 includes phase failure detection and a 100 kA breaking capacity — confirm that the existing panel's fault rating and protection scheme are compatible before swapping."},{"question":"What compliance documentation does Siemens provide for 3RV2021-0GA10-ZX95?","answer":"Siemens typically supplies a declaration of conformity (CE), UL/CSA listing, and RoHS/REACH compliance documentation with the SIRIUS series. Specific certificates are available on request at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-0GA10-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/3RV2021-0GA10-ZX95 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}