{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-7HN32-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-7HN32-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-7HN32-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HN32-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-7HN32-0AH0, molded case circuit breaker, 3-pole, line protection, rated 400 A, ETU350 electronic trip unit, 330 kA interrupting at 240 V.","salesMarkdown":"## What this MCCB is and what it does The Siemens 3VA2340-7HN32-0AH0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection in distribution panels. It carries a rated continuous current Iu of 400 A across three poles, with an ETU350 electronic trip unit that gives adjustable long-time, short-time, instantaneous, and ground-fault protection curves — though this variant ships without ground-fault monitoring. The interrupting ratings are substantial: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. That means it can safely clear fault currents up to those levels without upstream devices needing to coordinate — a real advantage when you're trying to keep selectivity in a high-fault panel. ## Thermal derating and enclosure fit This breaker holds its full 400 A rating up to 50 °C ambient. Above that it derates in 5 °C steps: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. If your panel runs hot — say a packed MCC bucket near a transformer — that 340 A at 70 °C figure is the one to design for, not the nameplate 400 A. The enclosure footprint is 248 mm high by 138 mm wide by 110 mm deep, which fits the standard SENTRON 3VA mounting pattern. IP40 on the front means it's protected against tools and wires >1 mm, but it's not sealed against water ingress — keep it inside the enclosure, not on a washdown wall.","metaTitle":"Siemens 3VA2340-7HN32-0AH0 SENTRON MCCB, 400 A, 3-pole, ETU3","metaDescription":"Siemens SENTRON 3VA2340-7HN32-0AH0 molded case circuit breaker, 400 A rated, 3-pole, ETU350 trip unit, 330 kA at 240 V. Current production. Sourced to order against 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","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"52.5 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","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"96 W","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2340-7HN32-0AA0","Design of the auxiliary release":"Without auxiliary release","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU350","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"400 A","Adjustable response value current / li max.":"4 000 A","Adjustable response value current / li min.":"4 000 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / Isd max.":"0 A","Adjustable response value current / Isd min.":"0 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LSI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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","Type of electrical connection / for main current circuit":"Lug terminal","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","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1"}},"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=380466&mlfb=3VA2340-7HN32-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-7HN32-0AH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-7HN32-0AH0 and how do I get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing — no stock or price figure is published here."},{"question":"What are the interrupting ratings at common voltages?","answer":"330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. Those are the maximum fault currents this MCCB can safely interrupt at each voltage level."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU350 electronic trip unit, which provides adjustable long-time, short-time, instantaneous, and ground-fault protection curves. This particular variant ships without ground-fault monitoring enabled."},{"question":"What are the physical dimensions of 3VA2340-7HN32-0AH0?","answer":"248 mm high, 138 mm wide, 110 mm deep. It mounts on the standard SENTRON 3VA footprint and carries IP40 protection on the front face."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-7HN32-0AH0","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/3VA2340-7HN32-0AH0 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}}