{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-7HM46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-7HM46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-7HM46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7HM46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-7HM46-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, adjustable thermal-magnetic trip 60–480 A, 330 kA breaking capacity at 240 V AC, line protection design.","salesMarkdown":"## SENTRON 3VA2140-7HM46-0AA0 — 40 A MCCB with Adjustable Trip and High Interrupting Capacity The Siemens SENTRON 3VA2140-7HM46-0AA0 is a 4-pole molded case circuit breaker rated for 40 A continuous current at 40 °C through 70 °C, with a thermal-magnetic trip adjustable from 60 A minimum to 480 A maximum. Its interrupting capacity reaches 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — figures that govern fault-clearing capability at the service-entrance or distribution point. Designed for line protection, this MCCB sits in the main or feeder position of a panelboard or switchboard, not as a branch device. The 60–480 A adjustable trip range means this breaker can be set to protect a 60 A feeder or a 480 A main, but the 40 A continuous rating is the thermal limit — the frame and contacts are sized for 40 A continuous load, and the higher trip setting only applies to the magnetic (short-circuit) pickup. For a 40 A continuous load, the thermal element should be set near 40 A; the magnetic adjustment then determines the instantaneous trip threshold. ## Lifecycle and Sourcing — Current Production, Quoted to Order No official successor has been published, so the 3VA2140-7HM46-0AA0 remains the direct fit for any panel originally specified with this code. ## Ground-Fault Monitoring and Environmental Limits The ground-fault monitoring version uses summation current formation on the L + N conductor — it measures vector sum of line and neutral currents to detect leakage to ground. Maximum power loss is 1.6 W, negligible for panel thermal budgeting. The trip indicator is not present, so no local mechanical flag shows a trip event — the breaker relies on the handle position or an external auxiliary contact (not included).","metaTitle":"Siemens 3VA2140-7HM46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 330 k","metaDescription":"Siemens SENTRON 3VA2140-7HM46-0AA0 molded case circuit breaker, 40 A rated, adjustable 60–480 A trip, 4-pole, 330 kA breaking at 240 V. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","Maximum":"480 A","Minimum":"60 A","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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]":"5.51 in","Height [In]":"7.13 in","Initial Value":"16 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"40 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","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","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 100%","Product Function / Grounding Protection":"Yes","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":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"double-sided box terminal","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=389580&mlfb=3VA2140-7HM46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7HM46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the adjustable trip range on this MCCB?","answer":"The thermal-magnetic trip is adjustable from 60 A minimum to 480 A maximum, though the continuous current rating is 40 A."},{"question":"What are the physical dimensions of 3VA2140-7HM46-0AA0?","answer":"86 mm depth, 140 mm width, 181 mm height."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-7HM46-0AA0","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/3VA2140-7HM46-0AA0 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}}