{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2040-4JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2040-4JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2040-4JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2040-4JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2040-4JQ42-0AA0, molded case circuit breaker, 4-pole, 40 A, ETU560 electronic trip unit, line protection, 121 kA at 240 V, 76 kA at 415 V, IP40 front.","salesMarkdown":"## SENTRON 3VA2040-4JQ42-0AA0 — 40 A 4-pole MCCB with ETU560 electronic trip unit The Siemens SENTRON 3VA2040-4JQ42-0AA0 is a 4-pole molded case circuit breaker rated for 40 A continuous current across the full operating temperature range from -40 °C to 70 °C, with no derating needed at elevated panel temperatures. It carries the ETU560 electronic trip unit, which supports adjustable long-time pickup and delay settings (tr from 0.5 s to 25 s), plus configurable N-conductor protection (OFF, 40 %, or 160 % of phase rating) — making it suited for line-feeder duty where coordination with downstream breakers matters. The interrupting ratings are 121 kA at 240 V, 76 kA at 415 V and 440 V, 53 kA at 500 V, and 3 kA at 690 V — the 415 V figure covers the common 400 V class panel bus, giving solid SCCR headroom for transformer-fed distribution. Communication function is onboard (the ETU560 supports the SENTRON communication-capable platform), and ground fault monitoring uses summation current sensing on L+N conductors. ## Sourcing and lifecycle — active, with a direct peer for panel swaps The 3VA2040-4JQ42-0AA0 shares the same 4-pole SENTRON 3VA frame dimensions (86 mm deep, 140 mm wide, 181 mm high) and ETU560 trip platform as the 3VA2140-8JQ42-0AA0. The envelope is 86 mm deep by 140 mm wide by 181 mm high (3.4 in × 5.5 in × 7.1 in), fitting standard SENTRON 3VA panel cutouts for 4-pole frames. Maximum power loss is 2.2 W, so internal panel heating from this breaker is negligible even in dense layouts.","metaTitle":"Siemens 3VA2040-4JQ42-0AA0 SENTRON MCCB, 40A 4P ETU560, 121k","metaDescription":"Siemens SENTRON 3VA2040-4JQ42-0AA0 molded case circuit breaker, 40A continuous, 4-pole, ETU560 electronic trip unit. Interrupting 121kA at 240V, 76kA at 415V. Active production, av","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 mm","Height":"181 mm","at 240 V":"121 kA","at 415 V":"76 kA","at 440 V":"76 kA","at 500 V":"53 kA","at 690 V":"3 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":"2.2 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-40 °C","Other Measurement Function":"No","Rated continuous current Iu":"40 A","Rated insulation voltage Ui":"800 V","Ground fault monitoring version":"Summation current formation L + N conductor","Design of the overcurrent release":"ETU560","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 / lg max.":"40 A","Adjustable response value current / lg min.":"16 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 / tg max.":"0.8 s","Adjustable response value current / tg min.":"0.05 s","Adjustable response value current / Isd max.":"400 A","Adjustable response value current / Isd min.":"24 A","Ground fault protection can be switched ON/OFF":"Yes","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LSIG","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"100 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/dc13abaec21de6822638e0e758bc63c5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=207302&mlfb=3VA2040-4JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2040-4JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a SENTRON 3VA series breaker, it carries the expected IEC/UL certifications for the class. Specific RoHS, REACH, and UL documentation is available from Siemens directly or through the distributor upon RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2040-4JQ42-0AA0","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/3VA2040-4JQ42-0AA0 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}}