{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN42-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN42-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HN42-0KH0, molded case circuit breaker, 4-pole, 400 A continuous, 187 kA breaking capacity at 240 V AC.","salesMarkdown":"At 500 V the interrupting rating is 75.6 kA; at 690 V it drops to 7.5 kA — a steep derating curve that matters when the breaker is applied in 690 V wind or marine systems. The continuous current holds at 400 A from 40 °C through 50 °C ambient, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. Panel builders should account for the enclosure's internal temperature rise when sizing the breaker. Maximum power loss is 96 W — a figure that drives ventilation requirements in sealed enclosures. Dimensions are 248 mm height, 184 mm width, and 110 mm depth. The 110 mm depth is the critical dimension for shallow backpanels or gland-plate clearance — confirm the enclosure depth before cutting the mounting plate. The breaker mounts via a fixed (non-plug-in) base; no DIN-rail adapter is listed. Panel layout must allow front-access wiring for the 4-pole line and load terminals.","metaTitle":"Siemens 3VA2340-5HN42-0KH0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HN42-0KH0 molded case circuit breaker, 400 A continuous, 4-pole, 187 kA breaking at 240 V. Active 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":"184 mm","Height":"248 mm","Maximum":"4 000 A","Minimum":"4 000 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"7.5 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","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"96 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2340-5HN42-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=278483&mlfb=3VA2340-5HN42-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0KH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HN42-0KH0 and what is the lead time?","answer":"This part is sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What are the key ratings for this MCCB?","answer":"400 A continuous at 40 °C, 4-pole, 187 kA interrupting at 240 V AC, 121 kA at 415 V AC, with a shunt trip release and 2 auxiliary + 1 alarm switch."},{"question":"What is the depth of 3VA2340-5HN42-0KH0?","answer":"The depth is 110 mm (4.33 inches), which is the critical dimension for enclosure clearance."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0KH0","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/3VA2340-5HN42-0KH0 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}}