{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-5KP42-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, 187 kA interrupting at 240 V, ETU850 electronic trip unit, line protection version.","salesMarkdown":"## What this 40 A MCCB brings to the panel The interrupting rating at 240 V is 187 kA, which drops to 121 kA at 415 V and 440 V, then 76 kA at 500 V, and 3.8 kA at 690 V. It carries the ETU850 electronic trip unit — that's the adjustable-release version, not a fixed thermal-magnetic. The N-conductor protection is adjustable from OFF through 40 % to 160 %, and the response time tr is settable from 0.5 s up to 25 s. That kind of adjustability matters when you're coordinating selectivity downstream or protecting a feeder that feeds mixed loads. ## Fit and footprint That depth is the critical dimension for enclosure clearance — 86 mm (3.4 in) means it fits standard 200 mm deep enclosures without the cover bumping the door.","metaTitle":"3VA2140-5KP42-0AA0 SENTRON MCCB, 40 A, 4-Pole, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA2140-5KP42-0AA0 molded case circuit breaker, 40 A rated, 4-pole, 187 kA interrupting at 240 V. Current production. Sourced to order against RFQ.","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":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"76 kA","at 690 V":"3.8 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":"1.6 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":"M","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=436360&mlfb=3VA2140-5KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2140-5KP42-0AA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time through our independent distribution network. We source to order against an RFQ."},{"question":"What is the depth of 3VA2140-5KP42-0AA0?","answer":"The depth is 86 mm (3.4 in). That's the dimension from the mounting surface to the front of the breaker — important for enclosure door clearance."},{"question":"What is the width of 3VA2140-5KP42-0AA0?","answer":"The width is 140 mm (5.5 in). That's the standard 4-pole MCCB footprint for the 3VA platform."},{"question":"Will 3VA2140-5KP42-0AA0 drop into a panel specified around 3VA2140-8JQ42-0AA0 without rewiring?","answer":"Both are 4-pole 40 A SENTRON 3VA breakers with the same physical footprint (181 x 140 x 86 mm). The key difference is the trip unit: the -5KP42 uses an ETU850 electronic trip, while the -8JQ42 uses a different release. Mechanically they swap in the same mounting hole pattern, but the wiring and protective settings need verification because the trip curves differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5KP42-0AA0","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/3VA2140-5KP42-0AA0 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}}