{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-6HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-6HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-6HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-6HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-6HM42-0AA0, molded case circuit breaker, 4-pole, 40 A continuous, line protection, breaking capacity 242 kA at 240 V, 187 kA at 415 V.","salesMarkdown":"The breaking capacity is what makes this breaker serious: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. At typical 400 V industrial supply, that 187 kA rating handles high-fault scenarios without cascading upstream — it's a high-interrupting-capacity (HIC) device for large switchboards or transformer secondaries. It also carries integral ground-fault monitoring via summation current formation on L + N conductor, so you get earth leakage detection without an add-on module — useful for personnel protection in wet environments or where GFCI is code-required. ## Panel fit and installation The breaker measures 181 mm high, 140 mm wide, and 86 mm deep — a 4-pole MCCB that fits standard panel cutouts for 160 A frame SENTRON units. It's a fixed-mount design, no plug-in base; you bolt it to the mounting plate and wire the line and load terminals. Power loss is rated at a maximum 1.6 W, so heat buildup in a dense panel is negligible. The 3VA2163-8HM32-0AA0 is a 63 A, 3-pole variant in the same SENTRON 3VA2 frame family. If your panel was laid out for that 3-pole unit, the 4-pole 3VA2140-6HM42-0AA0 will not drop in without rewiring — the neutral pole adds width (140 mm vs the 3-pole's narrower footprint) and changes the terminal arrangement. Stick with the pole count your panel was designed for unless you're reworking the bus.","metaTitle":"Siemens 3VA2140-6HM42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 242 k","metaDescription":"Siemens SENTRON 3VA2140-6HM42-0AA0 molded case circuit breaker, 40 A continuous, 4-pole, breaking capacity 242 kA 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":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 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":"H","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=260826&mlfb=3VA2140-6HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-6HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA2140-6HM42-0AA0 and how is it quoted?","answer":"It is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA2140-6HM42-0AA0 at common voltages?","answer":"At 240 V it's 242 kA; at 415 V and 440 V it's 187 kA; at 500 V it's 121 kA; at 690 V it's 3.7 kA."},{"question":"Does this breaker include ground-fault protection?","answer":"Yes, it has integral ground-fault monitoring via summation current formation on L + N conductor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-6HM42-0AA0","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/3VA2140-6HM42-0AA0 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}}