{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-7GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-7GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-7GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-7GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1340-7GF42-0AA0, molded case circuit breaker, 4-pole, 400 A at 40 °C, TM240 release, 440 kA at 240 V, IP40 front.","salesMarkdown":"That 400 A holds steady up through 50 °C; at 55 °C it's 392 A, and at 70 °C still 367 A (–). The TM240 thermal-magnetic release handles the overload and short-circuit curves. On the interrupting side, it's rated 440 kA at 240 V AC, 242 kA at 415/440 V, 154 kA at 500 V, and 17 kA at 690 V (–). It lives on a DIN rail or direct-mount in a panel; the 184 mm width and 110 mm depth (–) mean it fits standard MCCB cubicle cutouts, but verify the mounting centers if you're swapping into an older footprint. If your panel ambient runs hotter, the derating curve is published: 392 A at 55 °C, 384 A at 60 °C, 376 A at 65 °C, 367 A at 70 °C (–). The TM240 release means the thermal element is calibrated for a 400 A frame with a 240 A rating plug — verify the actual trip setting matches your load's FLA. The 440 kA interrupting rating at 240 V is the SCCR you can claim downstream; at 690 V it drops to 17 kA, so if you're feeding a 690 V drive or transformer, the available fault current must be coordinated. The 4-pole design with 100% N-conductor protection means the neutral is fully rated and switched — essential for 4-wire systems where harmonic currents or unbalanced loads could overload a reduced-neutral path.","metaTitle":"Siemens 3VA1340-7GF42-0AA0 SENTRON MCCB, 400 A, 4-Pole, 440","metaDescription":"Siemens SENTRON 3VA1340-7GF42-0AA0 molded case circuit breaker, 400 A continuous at 40 °C, 4-pole, TM240 release. Rated 440 kA at 240 V. Current lifecycle stage. Available 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":"440 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"154 kA","at 690 V":"17 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"392 A","at 60 °C":"384 A","at 65 °C":"376 A","at 70 °C":"367 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 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":"92.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"400 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","design of the N-conductor protection":"100%","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"600 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"2 000 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","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","Mechanical Service Life (Switching Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","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/f59d8c360c846d5ff9ef773daebb7908.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1093774&mlfb=3VA1340-7GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-7GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1340-7GF42-0AA0 and get a price?","answer":"This part is sourced through independent distribution channels. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"What is the interrupting rating of this MCCB at 240 V?","answer":"440 kA at 240 V AC. At 415/440 V it's 242 kA, at 500 V it's 154 kA, and at 690 V it's 17 kA."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"Standard Siemens documentation includes RoHS and REACH declarations, plus the IEC 60947-2 certification for the MCCB ratings."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1340-7GF42-0AA0","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/3VA1340-7GF42-0AA0 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}}