{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6JQ42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6JQ42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6JQ42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker (MCCB), 3VA2340-6JQ42-0AA0, 4-pole, 400 A rated, line protection, breaking capacity 242 kA at 240 V, 187 kA at 415 V.","salesMarkdown":"## What this MCCB does in your panel Its 242 kA interrupting capacity at 240 V (187 kA at 415 V) gives you headroom for high-fault installations — think transformer secondaries or large motor control centers where SCCR requirements push past typical 65 kA breakers. ## Temperature derating and real-world current Full 400 A rating holds up to 50 °C ambient. Above that, it derates linearly: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. ## Breaking capacity by voltage level Interrupting rating drops as voltage climbs: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. Mounts in a 184 mm wide, 248 mm tall, 110 mm deep footprint. Four-pole frame means it occupies the width of two standard single-pole MCCB positions. Check gland-plate clearance for the 110 mm depth — it fits most 200 mm deep enclosures but verify against your backpanel layout. ## Ground-fault and communications Includes summation current ground-fault monitoring on L+N conductors. Communication function is built in — no external module needed for basic signaling. Undervoltage release is not fitted on this variant. Trip indicator is absent, so fault diagnosis relies on the communication channel or external annunciation. Volume pricing and availability confirmed at quote time. No official second-source cross-reference, but the 5SQ2670-2YA06 series shares the same SENTRON platform and similar ratings — verify footprint and accessory compatibility before substituting.","metaTitle":"Siemens 3VA2340-6JQ42-0AA0 SENTRON MCCB, 400 A, 4-Pole, 242","metaDescription":"Siemens 3VA2340-6JQ42-0AA0 SENTRON molded case circuit breaker. 400 A rated, 4-pole, 242 kA breaking at 240 V. Active production, available to order. RFQ for volume pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"7.5 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"375 A","at 60 °C":"350 A","at 65 °C":"325 A","at 70 °C":"300 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"400 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":"96 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":"400 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; 20% to 100%","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":"400 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":"H","Mechanical Service Life (Operating Cycles) / Typical":"20 000","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/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=527238&mlfb=3VA2340-6JQ42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2340-6JQ42-0AA0 at different voltages?","answer":"242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 7.5 kA at 690 V. The 690 V rating is significantly lower — verify your available fault current at that voltage."},{"question":"Where can I buy 3VA2340-6JQ42-0AA0 and how is it quoted?","answer":"Available through independent distribution. Submit an RFQ for current pricing and availability — volume pricing confirmed at quote time."},{"question":"Does 3VA2340-6JQ42-0AA0 include ground-fault protection?","answer":"Yes, it features summation current ground-fault monitoring on the L+N conductors, integrated into the breaker."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6JQ42-0AA0","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/3VA2340-6JQ42-0AA0 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}}