{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2021-1BA10-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2021-1BA10-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RV2021-1BA10-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2021-1BA10-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2021-1BA10-ZX95 motor protection circuit breaker, Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on 35 mm DIN rail mounting, 45 mm wide.","salesMarkdown":"The Siemens SIRIUS 3RV2021-1BA10-ZX95 is a motor protection circuit breaker designed for Class 10 trip response, meaning it will disconnect within 10 seconds at 7.2× the thermal setting — fast enough to protect standard induction motors from locked-rotor heat rise without nuisance tripping on normal starts. Breaking capacity hits 100 kA at 400 V AC and holds that figure at 240 V and 500 V AC, dropping to 10 kA at 690 V AC. No ground fault detection on this variant, so if that's needed, look at the GF versions in the same SIRIUS family. ## Panel Fit & Mounting That side clearance is tighter than some competitors; if you're packing breakers side-by-side, you can run them at 0 mm spacing only if the ambient stays within rating — otherwise leave the 30 mm for heat dissipation. Terminals accept 2x (1 to 2.5 mm²) or 2x (2.5 to 10 mm²) solid or stranded, with M4 screws for the main contacts. A 5–6 mm diameter screwdriver shaft is specified — standard Pozidriv #2 or flat-blade in that range works. The rated operational voltage range is 20 to 690 V, covering low-voltage motor circuits from 24 V control transformers up to 690 V industrial mains. Horsepower ratings are given at specific voltages: 0.13 hp at 230 V, 1 hp at 460/480 V and at 575/600 V. The 2 A rating at 480 V and 600 V is the continuous current — match that to your motor's full-load amps. Switching frequency is rated at 15 operations per hour for AC-3 and AC-3e duty — that's typical for a motor starter protecting a pump or fan that cycles a few times an hour. Not designed for high-speed jogging or frequent reversing; for that, look at a dedicated contactor with a higher mechanical life.","metaTitle":"Siemens 3RV2021-1BA10-ZX95 SIRIUS Motor Protection Circuit B","metaDescription":"Siemens SIRIUS 3RV2021-1BA10-ZX95 motor protection circuit breaker, Class 10, 100 kA breaking capacity at 400 V AC, screw and snap-on DIN rail mount. Current production. Sourced to","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":"3RV2021-1BA10-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 1.4...2 A N-release 26 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":"0.13 hp","at 240 V rated value":"100 kA","at 400 V rated value":"100 kA","at 480 V rated value":"2 A","at 500 V rated value":"100 kA","at 600 V rated value":"2 A","at 690 V rated value":"10 kA","Design Of The Product":"For motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals","at 460/480 V rated value":"1 hp","at 575/600 V rated value":"1 hp","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":"10 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":"2 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":"2 A","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"2 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":"26 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":"1.4 ... 2 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=333113&mlfb=3RV2021-1BA10-ZX95"},"ai":{"faq":[{"question":"Will 3RV2021-1BA10-ZX95 drop into a panel specified around 3RV2021-1FA15 without rewiring?","answer":"Both are 45 mm wide SIRIUS motor protection breakers on 35 mm DIN rail, so the footprint and mounting are identical. Terminal sizes and wiring specs are the same (M4 screws, 2x 1–10 mm²). The difference is in the trip class and breaking capacity — the 1FA15 is a different variant; verify the thermal setting range and SCCR match your application before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2021-1BA10-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/3RV2021-1BA10-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}}