{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1021-1AA15-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1021-1AA15-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV1021-1AA15-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1AA15-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1021-1AA15-ZX95, 1.6 A rated current, Class 10 trip, 100 kA breaking capacity, screw terminals, 45 mm width.","salesMarkdown":"The Siemens 3RV1021-1AA15-ZX95 is a SIRIUS motor protection circuit breaker sized for a 1.6 A continuous current and rated for a 0.55 kW motor at 400 V AC. That 1.6 A is the full-load ampacity it carries without tripping — bump the load beyond that and the Class 10 bimetal curve starts its clock, opening in under 10 seconds at 7.2× rated current. Class 10 is the standard for standard induction motors; it protects the winding before the rotor stalls and cooks the insulation. The 100 kA breaking capacity holds across the full voltage range — 240 V, 400 V, 500 V, and 690 V AC — so this breaker clears a bolted fault upstream of the motor starter without welding its contacts shut. If one leg of a three-phase supply drops out, the breaker trips — that's a real help on a motor line where a single-phased winding can burn out before the overload relay notices. No ground-fault detection here, so keep a separate GFCI or RCD in the circuit if the installation code requires it. Mount it in any position — vertical, horizontal, upside-down — the thermal curve doesn't care. Screw terminals on both the main and auxiliary circuits. The main terminals accept solid wire from 0.5 to 1.5 mm² (two per clamp) and stranded from 1.0 to 2.5 mm² (two per clamp). For the auxiliary / control circuit, the same terminal range applies. AWG 14 to 10 on the main contacts. That's enough for the 1.6 A motor branch plus a small control transformer downstream.","metaTitle":"Siemens 3RV1021-1AA15-ZX95 SIRIUS Motor Protection CB, 1.6 A","metaDescription":"Siemens 3RV1021-1AA15-ZX95 SIRIUS motor protection circuit breaker, 1.6 A continuous, Class 10 trip, 100 kA breaking capacity at 400 V AC. Phase failure detection. Current lifecycl","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"96 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","Height":"97 mm","at 24 V":"1 A","at 60 V":"0.15 A","Stranded":"2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²)","at 230 V":"0.5 A","Backwards":"0 mm","Trip Class":"CLASS 10","At The Side":"0 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","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 50022","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"0.55 kW","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","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"7.25 W","Substance Prohibitance (Date)":"01.05.2012","Continuous Current Rated Value":"1.6 A","Design Of The Auxiliary Switch":"transverse","at AWG cables for main contacts":"2x (14 ... 10)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AWG cables for auxiliary contacts":"2x (18 ... 14)","at AC in hot operating state per pole":"2.4 W","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","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"1.6 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"thermomagnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"100 000","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"1.1 ... 1.6 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=479445&mlfb=3RV1021-1AA15-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1021-1AA15-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this breaker?","answer":"100 kA at 240 V, 400 V, 500 V, and 690 V AC — a high-fault rating that lets it sit on a high-capacity bus without upstream fusing."},{"question":"Where can I buy 3RV1021-1AA15-ZX95?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"Does it have phase failure protection?","answer":"Yes, phase failure detection is built in — it trips if one supply leg drops out, protecting the motor from single-phasing."},{"question":"What is the operating frequency limit?","answer":"Maximum 15 switching operations per hour in AC-3 duty — sized for a motor start cycle, not for rapid jogging or inching."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1021-1AA15-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/3RV1021-1AA15-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}}