{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-8HM46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-8HM46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-8HM46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8HM46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker, 3VA2140-8HM46-0AA0, 40 A rated continuous current, 4 poles, line protection design, 440 kA breaking capacity at 240 V AC.","salesMarkdown":"Rated 40 A continuous with four poles, it handles three-phase plus neutral in a 400 V class panel. The 440 kA interrupting rating at 240 V drops to 330 kA at 415 V and 52.5 kA at 690 V — the breaker's arc chamber is sized for high-fault industrial mains, not just branch circuits. ## Ground-fault monitoring and what it means in the panel This variant carries summation-current ground-fault monitoring on L + N conductors. That means the breaker itself senses the vector sum of phase and neutral currents — if leakage to earth unbalances the sum, it trips. No external ground-fault relay or CT block needed; the monitoring is integral to the breaker housing. For a panel builder, that saves a DIN slot and a wiring step. That 140 mm width is the four-pole footprint — three-pole siblings in the same frame are narrower. Verify the existing panel cutout or mounting plate accommodates the 140 mm width before specifying the swap. The depth of 86 mm includes the arc chamber and terminal housing; leave clearance for cable bending radius below the line-side lugs. ## Thermal performance across ambient temperature","metaTitle":"Siemens 3VA2140-8HM46-0AA0 SENTRON MCCB, 40 A, 4-Pole, 440 k","metaDescription":"Siemens 3VA2140-8HM46-0AA0 SENTRON molded case circuit breaker, 40 A rated, 4-pole, line protection. Breaking capacity 440 kA at 240 V. Active production. Sourced to order against","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":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"52.5 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":"1.2 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":"L","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=113225&mlfb=3VA2140-8HM46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8HM46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2140-8HM46-0AA0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Submit an RFQ for current pricing and availability — confirmed at quote time, not from a static stock figure."},{"question":"What is the breaking capacity of 3VA2140-8HM46-0AA0 at different voltages?","answer":"440 kA at 240 V AC, 330 kA at 415 V AC and at 440 V AC, 220 kA at 500 V AC, and 52.5 kA at 690 V AC. These are the maximum interrupting ratings for the 40 A frame."},{"question":"Does 3VA2140-8HM46-0AA0 include ground-fault protection?","answer":"Yes, it includes summation-current ground-fault monitoring on L + N conductors. The breaker trips on earth leakage without an external relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-8HM46-0AA0","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/3VA2140-8HM46-0AA0 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}}