{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-8KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-8KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-8KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-8KP42-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, line protection version, ETU850 electronic trip unit, 440 kA breaking capacity at 240 V.","salesMarkdown":"The 4-pole design handles three-phase plus neutral, with the N-conductor protection adjustable OFF or from 40 % to 160 % of the phase setting, so it suits both solidly-grounded and impedance-grounded systems. The interrupting ratings are the headline here: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V. The ETU850 release gives adjustable long-time delay (tr) from 0.5 to 25 seconds, letting you coordinate selectively with downstream breakers. Front IP40 protection means it's splash-resistant on the operator side but not sealed against dust ingress into the enclosure; keep it behind a panel door in dirty environments.","metaTitle":"Siemens 3VA2140-8KP42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 440 k","metaDescription":"Siemens SENTRON 3VA2140-8KP42-0AA0 molded case circuit breaker, 40 A rated, 4-pole, line protection, ETU850 release. 440 kA at 240 V. Current lifecycle. 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","at 240 V":"440 kA","at 415 V":"330 kA","at 440 V":"330 kA","at 500 V":"220 kA","at 690 V":"53 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]":"3.4 in","Width [in]":"5.5 in","Height [in]":"7.1 in","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"20 000","Communication Function":"Yes","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":"-40 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"40 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU850","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 40% bis160%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"25","Adjustable response value time / tr min.":"0.5","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"40 A","Adjustable response value current / li max.":"480 A","Adjustable response value current / li min.":"60 A","Adjustable response value current / lr min.":"16 A","Adjustable response value current / Isd max.":"400 A","Adjustable response value current / Isd min.":"24 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSI","Switching capacity class of the circuit breaker":"L","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug 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=436669&mlfb=3VA2140-8KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-8KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2140-8KP42-0AA0 and how is it quoted?","answer":"We source and quote this part to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source to 3VA2140-8KP42-0AA0?","answer":"The 3VA2140-8JQ42-0AA0 is the closest peer — same 4-pole, 40 A frame, same ETU850 release. The difference is in the accessory slot configuration; the 8JQ42 variant lacks the communication function that the 8KP42 carries onboard. If you don't need comms, the 8JQ42 drops into the same panel footprint without rewiring."},{"question":"What is the depth of 3VA2140-8KP42-0AA0?","answer":"The depth is 86 mm (3.4 in), measured from the mounting surface to the back of the breaker body."},{"question":"What is the width of 3VA2140-8KP42-0AA0?","answer":"The width is 140 mm (5.5 in), which is the standard 4-pole MCCB footprint for this SENTRON frame size."},{"question":"Will 3VA2140-8KP42-0AA0 drop into a panel specified around 3VA2140-8JQ42-0AA0 without rewiring?","answer":"Yes — the physical dimensions (140 mm wide, 181 mm high, 86 mm deep) are identical between the two order codes. The mounting hole pattern and busbar connections are the same, so it's a direct mechanical swap. The only functional difference is the onboard communication module on the 8KP42 variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-8KP42-0AA0","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/3VA2140-8KP42-0AA0 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}}