{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA4145-4ED34-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA4145-4ED34-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA4145-4ED34-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA4145-4ED34-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, molded-case circuit breaker, 3VA4145-4ED34-0AA0, 3-pole, 45 A (at 40 °C), 65 kA interrupting at 240 V, TM210 thermal-magnetic release.","salesMarkdown":"As the panel warms, the rating derates: 44 A at 45 °C, 43 A at 50 °C, 42 A at 60 °C, 40 A at 70 °C. If your enclosure runs hot, size up one frame rather than push the trip curve. The TM210 release offers fixed instantaneous pickup at 450 A (10× In) — fine for motor inrush or transformer magnetizing, but not adjustable if you need tighter coordination. Interrupting ratings are the breaker's ability to clear a fault without welding or exploding. 65 kA at 240 V covers most North American 240/120 V panelboards. 25 kA at 480 V is the standard for 480 V distribution in commercial and light industrial. At 600 Y/347 V it still holds 14 kA — enough for 600 V wye systems common in Canadian and some process plants. ## Panel integration Mounts on a DIN rail or direct-panel. 3-pole, 76.2 mm wide (3 in) — standard 3-pole MCCB footprint. Depth 75.1 mm, height 129.4 mm. No neutral conductor provision; no ground-fault monitoring version.","metaTitle":"Siemens 3VA4145-4ED34-0AA0 SENTRON MCCB, 45 A, 65 kA at 240","metaDescription":"Siemens 3VA4145-4ED34-0AA0 SENTRON molded-case circuit breaker, 3-pole, 45 A rated at 40 °C, 65 kA interrupting at 240 V. TM210 release. Current production. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"75.1 mm","Width":"76.2 mm","Height":"129.4 mm","at 240 V":"65 kA","at 480 V":"25 kA","at 40 °C":"45 A","at 45 °C":"44 A","at 50 °C":"43 A","at 55 °C":"43 A","at 60 °C":"42 A","at 65 °C":"41 A","at 70 °C":"40 A","Depth [In]":"3 in","Width [In]":"3 in","Height [In]":"5.1 in","at 480 Y/277 V":"25 kA","at 600 Y/347 V":"14 kA","Number Of Poles":"3","Product version":"System protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded-case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"10.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"45 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM210","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","product designation / according to UL file":"SEAB","Adjustable response value current / li max.":"450 A","Adjustable response value current / li min.":"450 A","marking / acc. to UL 489 / 100%-rated breaker":"No","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Max. rated operational current of the frame size":"125 A","electrical endurance (switching cycles) / at 480 V":"8 000","electrical endurance (switching cycles) / at 600 V":"4 000","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"Infeed side: Low tab","Arrangement Of Electrical Connectors / For Main Current Circuit":"Load side: Circular conductor terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (8 AWG - 3/0)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/eb0b65b52362587427f4a4aaaadf7174.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1058365&mlfb=3VA4145-4ED34-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA4145-4ED34-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA4145-4ED34-0AA0 and get a price?","answer":"The breaker 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 interrupting capacity of 3VA4145-4ED34-0AA0 at 480 V?","answer":"25 kA at 480 V, and 65 kA at 240 V."},{"question":"What compliance documentation does Siemens provide for this breaker?","answer":"The breaker carries UL file designation SEAB and is marked per UL 489. RoHS and REACH compliance documentation is available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA4145-4ED34-0AA0","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/3VA4145-4ED34-0AA0 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}}