{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series molded case circuit breaker, order code 3VA2340-5HN42-0CH0, 4-pole, 400 A rated continuous current, interrupting capacity 187 kA at 240 V AC, ETU350 electronic trip unit, line protection version, with undervoltage release.","salesMarkdown":"## Siemens SENTRON 3VA2340-5HN42-0CH0 — 400 A MCCB with ETU350, Line Protection The Siemens SENTRON 3VA2340-5HN42-0CH0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous current at 40 °C, with an interrupting capacity of 187 kA at 240 V AC. The 187 kA at 240 V is the headline SCCR figure; at 415 V it still breaks 121 kA, and at 690 V it holds 17 kA. That puts this breaker in the high-interrupting-capacity tier of the SENTRON 3VA family, sized for main or feeder duty in large distribution panels where fault current is severe. The ETU350 is a microprocessor-based trip unit with adjustable thermal and magnetic settings, plus a trip indicator. Dimensions are 184 mm wide, 248 mm high, 110 mm deep. The 184 mm width is the standard 4-pole MCCB footprint in the 3VA frame size — it will occupy the same panel space as other 4-pole SENTRON breakers in this current class. Operating temperature range is -25 °C to 70 °C, with derating above 55 °C: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C. ## Sourcing & Lifecycle — Current Production, Quoted to Order The base switch assembly is 3VA2340-5HN42-0AA0; the integrated auxiliary trip is 3VA9608-0BB24. These sub-component order codes are useful for spare-parts ordering or if you need to replace the trip unit separately. ## Panel Integration — Footprint and Mounting The 184 mm width matches the standard 4-pole SENTRON 3VA frame — it will sit adjacent to other 3VA breakers without extra spacing. The undervoltage release is factory-installed; no field wiring of a separate UVR module is required. The auxiliary contact block (2 aux + 1 trip alarm) is integrated, so you get status feedback without an add-on module.","metaTitle":"Siemens 3VA2340-5HN42-0CH0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HN42-0CH0 molded case circuit breaker, 400 A rated, 4-pole, 187 kA at 240 V, ETU350 release, undervoltage release included. Current production. Quoted to o","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 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":"4","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":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"98.5 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":"3VA2340-5HN42-0AA0","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB24","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=316705&mlfb=3VA2340-5HN42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA2340-5HN42-0CH0 at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. These are the rated short-circuit breaking capacities (Icu) per IEC 60947-2."},{"question":"Where can I buy 3VA2340-5HN42-0CH0 and what is the lead time?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What trip unit does this breaker use?","answer":"ETU350 electronic trip unit, configured for line protection. It has adjustable overload and short-circuit settings, plus a trip indicator."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0CH0","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/3VA2340-5HN42-0CH0 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}}