{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0CH0, molded case circuit breaker, 4-pole, 400 A rated continuous current, 187 kA at 240 V, ETU320 release, undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA2340-5HL42-0CH0 is a 4-pole molded case circuit breaker rated for 400 A continuous current (Iu) at 40 °C, with a rated insulation voltage of 800 V. Its interrupting capacity hits 187 kA at 240 V and 121 kA at 415 V or 440 V, dropping to 17 kA at 690 V — numbers that tell you this is built for high-fault utility feeds or large transformer secondaries, not branch circuits. ## Thermal derating — the real-world number Rated 400 A from 40 °C through 50 °C, it starts to pull back at 55 °C (385 A), then 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. The maximum power loss is 98.5 W, so ventilation matters in a sealed enclosure. The auxiliary contact block (2 aux + 1 trip alarm) and the integrated undervoltage release are factory-fitted; the separate auxiliary trip (3VA9608-0BB24) is listed as a supplied component. No communication or phase-failure detection on this variant.","metaTitle":"Siemens 3VA2340-5HL42-0CH0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0CH0 molded case circuit breaker, 400 A rated continuous current, 4-pole, 187 kA breaking capacity at 240 V. Current production. Sourced 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":"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":"3VA2340-5HL42-0AA0","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":"ETU320","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.":"600 A","Adjustable response value current / lr min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","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=150988&mlfb=3VA2340-5HL42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HL42-0CH0 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm number."},{"question":"What is the breaking capacity of 3VA2340-5HL42-0CH0 at different voltages?","answer":"At 240 V it interrupts 187 kA, at 415 V and 440 V it handles 121 kA, at 500 V it's rated 75.6 kA, and at 690 V it drops to 17 kA. These are the short-circuit breaking capacities for line protection duty."},{"question":"What trip unit and auxiliary options come on this MCCB?","answer":"It ships with an ETU320 electronic overcurrent release, a factory-fitted undervoltage release, and an auxiliary contact block with two auxiliary switches plus one trip alarm switch (HQ). No ground-fault monitoring or communication module is included."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0CH0","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/3VA2340-5HL42-0CH0 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}}