{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-7HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-7HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-7HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-7HM42-0AA0, 4-pole molded case circuit breaker, line protection, 400 A continuous, ETU330 electronic trip unit, 330 kA at 240 V.","salesMarkdown":"The breaking capacity is serious: 330 kA at 240 V, 242 kA at 415/440 V, 187 kA at 500 V, and still 7.5 kA at 690 V. Current rating is temperature-dependent: full 400 A from 40 °C to 50 °C, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The 340 A at 70 °C is still a lot of headroom for most feeders. Physical footprint: 184 mm wide, 248 mm tall, 110 mm deep. The N-conductor protection is adjustable: can be set to OFF, 50%, or 100% of the phase current. That's useful for systems where the neutral doesn't need full protection (e.g., balanced three-phase loads) or where you want to coordinate with downstream breakers. Optional motor drive is available for remote operation — useful if this breaker is in a remote substation or a hard-to-reach location in the plant. The ETU330 trip unit is the electronic overcurrent release, with adjustable L (long-time), S (short-time), I (instantaneous), and G (ground-fault) protection curves. That's the standard electronic trip for this frame — no communication function on this variant, so no remote monitoring without adding an external module.","metaTitle":"Siemens 3VA2340-7HM42-0AA0 SENTRON MCCB, 400A, 4-Pole, 330kA","metaDescription":"Siemens SENTRON 3VA2340-7HM42-0AA0 molded case circuit breaker, 400A continuous, 4-pole, ETU330 trip unit, 330 kA at 240 V. Current production. Sourced to order.","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","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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":"385 A","at 60 °C":"370 A","at 65 °C":"355 A","at 70 °C":"340 A","Depth [In]":"4.3 in","Width [In]":"7.2 in","Height [In]":"9.8 in","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"No","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","Courant permanent assigné Iu":"400 A","Ground Fault Monitoring Version":"Summation current formation L + N conductor","Tension assignée d'isolement Ui":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","reference code / acc. to DIN EN 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg max.":"400 A","Adjustable response value current / lg min.":"0.3 s","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"600 A","Adjustable response value current / tg min.":"0.1 s","Ground fault protection can be switched ON/OFF":"No","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LIG","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","Max. rated operational current of the frame size":"400 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"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=348638&mlfb=3VA2340-7HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2340-7HM42-0AA0 at different voltages?","answer":"330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 7.5 kA at 690 V. The high 330 kA at 240 V suits high-fault applications like transformer secondaries."},{"question":"Where can I buy 3VA2340-7HM42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"Does 3VA2340-7HM42-0AA0 have ground fault protection?","answer":"Yes, it includes ground fault monitoring via summation current formation on the L + N conductors, adjustable through the ETU330 trip unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-7HM42-0AA0","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/3VA2340-7HM42-0AA0 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}}