{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-7KP42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-7KP42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-7KP42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7KP42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-7KP42-0AA0, molded case circuit breaker, 40 A, 4-pole, ETU850 electronic trip unit, 330 kA at 240 V, line protection.","salesMarkdown":"It carries an ETU850 electronic overcurrent release, which means the trip curve is programmable and the breaker can communicate status over a network — the communication function is built in, so you get remote monitoring without an add-on module. Four poles handle three-phase plus neutral, and the interrupting ratings are substantial: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. An optional motor drive is available as a field-installable accessory, which lets you remote-reset or remote-trip the breaker from a PLC or SCADA system. The interrupting capacity at 690 V drops to 3.7 kA — still adequate for most secondary-side faults in a 690 V distribution board, but verify against your available fault current. Maximum power loss is 1.6 W, negligible for panel thermal budgeting.","metaTitle":"Siemens 3VA2140-7KP42-0AA0 SENTRON MCCB, 40 A, 4-Pole, ETU85","metaDescription":"Siemens SENTRON 3VA2140-7KP42-0AA0 molded case circuit breaker, 40 A, 4-pole, ETU850 electronic trip, 330 kA at 240 V. Current production. Available 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":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","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":"Yes","Courant permanent assigné Iu":"40 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"480 A","Adjustable response value current / li min.":"60 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"160 A","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1 mm"}},"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=276966&mlfb=3VA2140-7KP42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-7KP42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2140-7KP42-0AA0?","answer":"This MCCB is available to order through independent distribution. Submit an RFQ for current availability and pricing — no stock or lead-time figures are published here."},{"question":"What is the interrupting capacity of this breaker?","answer":"At 240 V it interrupts 330 kA; at 415 V and 440 V, 242 kA; at 500 V, 187 kA; at 690 V, 3.7 kA."},{"question":"What trip unit does the 3VA2140-7KP42-0AA0 use?","answer":"It uses the ETU850 electronic overcurrent release, which supports adjustable protection curves and has a built-in communication function for remote monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-7KP42-0AA0","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/3VA2140-7KP42-0AA0 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}}