{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-5MN32-0AD0, molded case circuit breaker, motor protection design, 3-pole, 40 A rated current, 121 kA breaking capacity at 415 V, 86 x 105 x 181 mm.","salesMarkdown":"That's unusual for a compact MCCB — many competitors start derating above 40 °C. At 240 V it's rated 187 kA, so it handles utility-transformer secondary faults cleanly. No undervoltage release, no shunt trip, no communication module on this order code; it's a straight thermal-magnetic motor protector with auxiliary switches (3 HQ aux switches included per). The basic switch inside is 3VA21405MN320AA0, so if you're swapping just the internal mechanism, that's the spare part number. That's a standard SENTRON 3VA2 frame size — mounts on DIN rail or direct panel via screw terminals. Maximum power loss is 1.6 W at rated load. That's low enough that you don't need forced ventilation in a typical panel — the heat rise from this breaker alone won't push the internal ambient past the 70 °C operating limit.","metaTitle":"Siemens 3VA2140-5MN32-0AD0 SENTRON MCCB, 40 A, 121 kA at 415","metaDescription":"Siemens 3VA2140-5MN32-0AD0 SENTRON molded case circuit breaker, 40 A rated, 121 kA breaking capacity at 415 V, motor protection design, current production. Sourced to order against","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","Height":"181 mm","Maximum":"17 s","Minimum":"4 s","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"3.7 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Motor protection","Communication Function":"No","Phase Failure Detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"1.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA21405MN320AA0","Design Of The Auxiliary Switch":"3 auxiliary switches HQ","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"11 000 W","operating power / at AC-3 / at 400 V":"18 500 W","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"160 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569645&mlfb=3VA2140-5MN32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0AD0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA2140-5MN32-0AD0's breaking capacity at 415 V?","answer":"121 kA at 415 V — that's the interrupting rating for a 3-phase fault at that voltage level."},{"question":"Where can I buy 3VA2140-5MN32-0AD0?","answer":"Sourced and quoted to order against an RFQ through independent distribution — availability and current pricing confirmed at quote time."},{"question":"Does 3VA2140-5MN32-0AD0 include phase failure protection?","answer":"Yes, phase failure detection is built into this motor protection variant — it trips on loss of any phase."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0AD0","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/3VA2140-5MN32-0AD0 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}}