{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6JQ32-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6JQ32-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6JQ32-0AJ0, Molded case circuit breaker, 3-pole, 400 A rated at 40 °C, line protection, with communication function.","salesMarkdown":"Its current setting range spans 600 A to 4 000 A, so it handles main feeder or large subfeed applications where you need adjustable trip coordination downstream of a transformer or upstream of branch breakers. Breaking capacity is the headline selector here: 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. At 415 V — common for industrial distribution in IEC markets — the 187 kA rating means this breaker clears high-fault scenarios without cascading upstream, which simplifies selective coordination studies and lets you keep downstream breakers at lower ratings. Thermal derating is published per degree: it holds 400 A flat through 50 °C, then steps down to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. The breaker includes a communication function and a trip indicator, which simplifies integration with a BMS or SCADA system for remote status and fault annunciation. ## Sourcing and lifecycle — active, quoted to order The basic switch variant 3VA2340-6JQ32-0AA0 shares the same frame and trip unit; the -0AJ0 suffix adds the auxiliary switch and trip alarm configuration listed above. If your BOM calls for the base switch without auxiliaries, the -0AA0 is the direct drop-in. The 110 mm depth fits standard MCCB mounting footprints in distribution panels; verify the busbar and lug kit clearance against your enclosure depth before ordering. Maximum power loss is 96 W — account for this in enclosed panel thermal calculations, especially when grouping multiple breakers.","metaTitle":"Siemens 3VA2340-6JQ32-0AJ0 SENTRON MCCB, 400 A, 3-Pole","metaDescription":"Siemens SENTRON 3VA2340-6JQ32-0AJ0 molded case circuit breaker, 400 A rated at 40°C, 3-pole, 242 kA at 240 V. Active production, quoted to order. Request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 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]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"Yes","Number Of Poles":"3","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","Of The Supplied Basic Switch":"3VA2340-6JQ32-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HP","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Summation current formation L-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 160%","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB11","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=55438&mlfb=3VA2340-6JQ32-0AJ0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0AJ0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-6JQ32-0AJ0 and how is it quoted?","answer":"This MCCB is sourced through independent distribution and quoted 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 breaking capacity of this MCCB at 415 V?","answer":"At 415 V the breaking capacity is 187 kA. At 240 V it is 242 kA, at 440 V it is 187 kA, at 500 V it is 121 kA, and at 690 V it is 7.5 kA."},{"question":"What is the rated current of 3VA2340-6JQ32-0AJ0 at 40 °C?","answer":"The rated current is 400 A at 40 °C. It holds 400 A through 50 °C, then derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C (–)."},{"question":"Does this breaker include communication capability?","answer":"Yes, it includes a communication function for integration with BMS or SCADA systems. It also has a trip indicator and is configured with 2 auxiliary switches plus 1 trip alarm switch HP."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0AJ0","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/3VA2340-6JQ32-0AJ0 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}}