{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN32-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN32-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN32-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN32-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HN32-0AH0, molded case circuit breaker, 3-pole, 400 A, ETU350 electronic trip, 187 kA at 240 V, IP40 front.","salesMarkdown":"That 400 A holds flat from 40 °C up through 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 — so if your panel runs hot near a row of drives, you still have headroom without upsizing the frame. The interrupting ratings climb to 187 kA at 240 V, drop to 121 kA at both 415 V and 440 V, then 75.6 kA at 500 V, and 17 kA at 690 V. For a 400 A line-up on a 480 V secondary, that 75.6 kA gives you real selectivity headroom against a downstream feeder fault — you're not chasing coordination curves with a marginal breaker. ## Trip unit and auxiliary contacts — what's inside The ETU350 is a basic electronic trip with line protection only — no voltage trigger, no undervoltage release, no phase-failure detection, no ground-fault monitoring, and no communication module. It's a straight feeder breaker for a distribution panel, not a motor-protection device. Latching endurance is rated at 15,000 operations, which is standard for a fixed-mount MCCB in a distribution role. ## Physical fit and environmental limits Dimensions are 248 mm high by 138 mm wide by 110 mm deep — a standard 3-pole MCCB footprint for a 400 A SENTRON frame.","metaTitle":"Siemens 3VA2340-5HN32-0AH0 SENTRON MCCB, 400 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA2340-5HN32-0AH0 molded case circuit breaker, 400 A rated, 187 kA breaking at 240 V, ETU350 release, IP40 front. Current lifecycle. Quoted to order.","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":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"17 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":"3VA2340-5HN32-0AA0","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":"M","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=242978&mlfb=3VA2340-5HN32-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN32-0AH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HN32-0AH0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What are the interrupting ratings for this MCCB at common voltages?","answer":"At 240 V it interrupts 187 kA, at 415 V and 440 V it handles 121 kA, at 500 V it manages 75.6 kA, and at 690 V it breaks 17 kA."},{"question":"What trip unit does 3VA2340-5HN32-0AH0 use?","answer":"It uses an ETU350 electronic trip unit configured for line protection only — no undervoltage release, no ground-fault monitoring, no communication module."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN32-0AH0","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/3VA2340-5HN32-0AH0 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}}