{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5JQ32-0KH0, molded case circuit breaker, 3-pole, 400 A, 187 kA at 240 V, line protection, with shunt trip and auxiliary switches.","salesMarkdown":"The Siemens SENTRON 3VA2340-5JQ32-0KH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 400 A at 40 °C and an interrupting capacity of 187 kA at 240 V. For a 415 V or 440 V system the interrupting capacity settles to 121 kA, still substantial enough for most industrial distribution. ## Interrupting capacity and thermal derating At 500 V the interrupting capacity drops to 75.6 kA, and at 690 V it is 7.5 kA — a steep roll-off that reflects the physics of arc extinction in air at higher system voltages. The continuous current rating holds at 400 A from 40 °C through 50 °C; above that it derates linearly to 300 A at 70 °C. ## Physical integration and auxiliary options The basic switch variant is 3VA2340-5JQ32-0AA0, which shares the same frame and trip unit. Maximum power dissipation at rated current is 96 W; account for that heat load in the enclosure thermal calculation.","metaTitle":"Siemens 3VA2340-5JQ32-0KH0 SENTRON MCCB, 400 A, 3-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5JQ32-0KH0 molded case circuit breaker, 400 A, 3-pole, 187 kA interrupting 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":"138 mm","Height":"248 mm","Maximum":"4 000 A","Minimum":"600 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":"375 A","at 60 °C":"350 A","at 65 °C":"325 A","at 70 °C":"300 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Full-Scale Value":"400 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"Yes","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":"3VA2340-5JQ32-0AA0","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":"Summation current formation L-conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 160%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Product Function / Grounding Protection":"Yes","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":"LSIG","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=329800&mlfb=3VA2340-5JQ32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5JQ32-0KH0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time; no stock count or lead-time figure is published here."},{"question":"What is the interrupting capacity of 3VA2340-5JQ32-0KH0 at different voltages?","answer":"At 240 V the interrupting capacity is 187 kA; at 415 V and 440 V it is 121 kA; at 500 V it is 75.6 kA; and at 690 V it is 7.5 kA."},{"question":"Does 3VA2340-5JQ32-0KH0 include a shunt trip or auxiliary switches?","answer":"Yes, it includes a shunt trip (STL) for remote tripping and an auxiliary switch block configured as 2 auxiliary switches plus 1 trip alarm switch (HQ)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0KH0","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/3VA2340-5JQ32-0KH0 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}}