{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN42-0JL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN42-0JL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0JL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0JL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HN42-0JL0, Molded case circuit breaker, 4-pole, Line protection, Rated continuous current Iu 400 A, Interrupting capacity 187 kA at 240 V, ETU350 release, Shunt trip STL.","salesMarkdown":"The Siemens 3VA2340-5HN42-0JL0 is a 4-pole SENTRON molded case circuit breaker rated for 400 A continuous current at 40 °C, with an ETU350 electronic trip unit. It holds the same 400 A rating 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 in a warm panel you lose about 15 % of headroom at the top end. Interrupting capacity runs 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; that 187 kA at 240 V means it handles the full available fault current on a high-capacity 240 V distribution bus without cascading upstream breakers. This is a line-protection variant — no ground-fault monitoring, no phase-failure detection, no communication module. A shunt trip (STL) is integrated; there is no undervoltage release. The 3VA2340-5HN42-0JL0 measures 248 mm high by 184 mm wide by 110 mm deep — a standard SENTRON 3VA2 frame size. The 184 mm width for a 4-pole breaker means you need at least 9 module-widths of DIN rail (at 18 mm per module) plus breathing space on each side for cable bending radius. The 15 000 mechanical endurance cycles are typical for a 400 A frame — fine for distribution duty but not for frequent switching under load. The basic switch module is order code 3VA2340-5HN42-0AA0; the integrated auxiliary trip is 3VA9688-0BL32. If you need to swap the trip unit or add auxiliary contacts later, those are the service parts to order.","metaTitle":"Siemens 3VA2340-5HN42-0JL0 SENTRON MCCB, 400A 4P, 187kA","metaDescription":"Siemens 3VA2340-5HN42-0JL0 SENTRON molded case circuit breaker, 400A rated continuous current, 4 poles, interrupting up to 187 kA at 240 V. Active production. 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":"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":"Yes","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 + 1 electrical 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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":"4","Protective function of the overcurrent release":"LSI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=365593&mlfb=3VA2340-5HN42-0JL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0JL0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2340-5HN42-0JL0 and get a price?","answer":"The 3VA2340-5HN42-0JL0 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send your quantity and target lead time for a firm offer."},{"question":"What is the interrupting capacity of the 3VA2340-5HN42-0JL0 at different voltages?","answer":"The interrupting capacity is 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. The 187 kA at 240 V is the highest rating — suitable for high-fault distribution boards."},{"question":"What is the rated continuous current of the 3VA2340-5HN42-0JL0 and how does it derate with temperature?","answer":"The rated continuous current is 400 A at 40 °C, 45 °C, and 50 °C. It derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Plan for about a 15 % reduction if the panel ambient reaches 70 °C."},{"question":"What auxiliary contacts come with the 3VA2340-5HN42-0JL0?","answer":"The breaker ships with 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ version). There is also an integrated shunt trip (STL) release. No undervoltage release is fitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0JL0","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/3VA2340-5HN42-0JL0 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}}