{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-7HN32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-7HN32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-7HN32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HN32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-7HN32-0JA0, molded case circuit breaker, 3-pole, 400 A rated continuous current, shunt trip release, line protection design.","salesMarkdown":"It is a 3-pole unit rated for 400 A continuous current at 40 °C, meaning it can carry that load indefinitely without tripping under normal conditions — a key figure for sizing the main feeder or large motor branch circuit. The interrupting capacity tells you what fault it can clear: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 7.5 kA at 690 V. At the common 400 V-class industrial voltage (415 V), the 242 kA rating means this breaker can safely interrupt a fault up to that level without catastrophic failure — a critical parameter for high-fault-current installations like transformer secondaries or large motor control centers. The 400 A rating holds at 40 °C, 45 °C, and 50 °C. Above that, derating applies: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Maximum power loss is 96 W. That is the heat the breaker dumps into the panel at full rated current. Factor it into your enclosure thermal budget, especially if multiple breakers are ganged. Operating ambient range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Dimensions: 248 mm height, 138 mm width, 110 mm depth. This is a standard MCCB footprint for the 400 A frame class. The 110 mm depth (4.33 in) is the dimension that matters for enclosure depth clearance — verify it clears the door or deadfront when mounted on a DIN rail or backplate.","metaTitle":"Siemens 3VA2340-7HN32-0JA0 SENTRON MCCB, 400A, 3-Pole, Shunt","metaDescription":"Siemens SENTRON 3VA2340-7HN32-0JA0 molded case circuit breaker, 400 A continuous, 3-pole, line protection, shunt trip release. Interrupting capacity 330 kA at 240 V. Active product","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":"4 000 A","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]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Of The Supplied Basic Switch":"3VA2340-7HN32-0AA0","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","Product Function / Grounding Protection":"No","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":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","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=421736&mlfb=3VA2340-7HN32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HN32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of this MCCB at 415 V?","answer":"242 kA at 415 V AC. At 240 V it is 330 kA, at 440 V it is also 242 kA, at 500 V it drops to 187 kA, and at 690 V it is 7.5 kA."},{"question":"Where can I buy 3VA2340-7HN32-0JA0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here. Submit an RFQ for a firm quote with lead time."},{"question":"Does this breaker have a shunt trip or undervoltage release?","answer":"It is fitted with a shunt trip release (STL) for remote tripping. It does not have an undervoltage release or ground-fault monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-7HN32-0JA0","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/3VA2340-7HN32-0JA0 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}}