{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 40 A continuous rated current, 4-pole, adjustable thermal-magnetic trip 60–480 A, breaking capacity 187 kA at 240 VAC, 86 mm depth, 140 mm width, 181 mm height.","salesMarkdown":"The Siemens 3VA2140-5JQ42-0AA0 is a 4-pole SENTRON molded case circuit breaker (MCCB) rated for 40 A continuous current, with an adjustable thermal-magnetic trip unit spanning 60 A minimum to 480 A maximum — meaning you set the actual protection point within that window to match the downstream load. Breaking capacity is 187 kA at 240 VAC, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — the 240 V figure tells you this breaker handles high available fault current at lower voltages typical of North American distribution panels. Ground-fault monitoring uses summation current formation on L+N conductors, so it detects leakage without a separate GFCI module. ## Sizing and selectivity Maximum power loss is 1.6 W, low enough that adjacent devices see minimal heat rise in a crowded DIN-rail or panel-mount arrangement. The adjustable trip range (60–480 A) lets you coordinate with upstream and downstream devices for selective coordination — set the magnetic pickup above the inrush of downstream motor starters or downstream MCCBs.","metaTitle":"Siemens 3VA2140-5JQ42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 187 k","metaDescription":"Siemens 3VA2140-5JQ42-0AA0 SENTRON molded case circuit breaker, 40 A continuous, 4-pole, adjustable 60–480 A range, 187 kA at 240 VAC. Active production. Quoted to order against RF","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":"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]":"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":"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","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":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","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":"LSIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","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=531063&mlfb=3VA2140-5JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2140-5JQ42-0AA0 drop into a panel specified around 5SQ2670-2YA63 without rewiring?","answer":"Not without checking the mounting footprint and busbar spacing — the 3VA2140-5JQ42-0AA0 is 86 mm deep, 140 mm wide, 181 mm tall; compare those against the 5SQ2670-2YA63's dimensions before assuming a drop-in fit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5JQ42-0AA0","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/3VA2140-5JQ42-0AA0 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}}