{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5KQ32-0LC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5KQ32-0LC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5KQ32-0LC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KQ32-0LC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5KQ32-0LC0, molded case circuit breaker, 3-pole, 400 A rated at 40 °C, line protection, 187 kA interrupting at 240 V, undervoltage release, communication function, 2 auxiliary switches HQ, universal trigger UNI.","salesMarkdown":"The 3VA frame is the current SENTRON generation, and this variant includes an undervoltage release (UNI universal trigger) plus two HQ auxiliary switches for status feedback. It also has a communication function, meaning it can talk to a higher-level monitoring or control system. The 400 A rating holds steady from 40 °C up to 50 °C, then derates: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. The interrupting curve drops fast at higher voltages: 75.6 kA at 500 V and only 7.5 kA at 690 V. At 690 V this breaker is still useful for a lightly-faulted industrial system, but it's not your main service entrance breaker at that voltage. The 3-pole construction fits standard three-phase distribution. That 110 mm depth (4.33 inches) is the dimension you check against the enclosure door clearance and bus bar reach. The 138 mm width (5.43 inches) determines the DIN-rail or mounting-plate spacing for a 3-pole MCCB. It ships with two HQ auxiliary switches and a universal trigger (UNI) undervoltage release already integrated — no separate field-assembly of those accessories. The communication function is onboard, so you only need to wire the bus connection. The breaker includes a voltage trigger (undervoltage release) and a communication function, both of which require their own wiring and coordination with the control system.","metaTitle":"Siemens 3VA2340-5KQ32-0LC0 SENTRON MCCB, 400 A, 3-Pole","metaDescription":"Siemens SENTRON 3VA2340-5KQ32-0LC0 molded case circuit breaker, 400 A rated at 40°C, 3-pole, 187 kA interrupting at 240 V. Line protection with undervoltage release and communicati","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":"No","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":"Yes","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"98.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Of The Supplied Basic Switch":"#BEZUG!","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"universal trigger (UNI)","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":"ETU860","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 160%","Of The Integrated Auxiliary Trip Unit":"3VA9908-0BD12","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=808487&mlfb=3VA2340-5KQ32-0LC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KQ32-0LC0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA2340-5KQ32-0LC0 and how is it quoted for volume purchases?","answer":"This part is sourced through independent industrial-automation distribution. It is quoted to order against an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA2340-5KQ32-0LC0 at 240 V and 415 V?","answer":"The interrupting capacity is 187 kA at 240 V and 121 kA at 415 V. At 500 V it drops to 75.6 kA, and at 690 V it is 7.5 kA."},{"question":"Does 3VA2340-5KQ32-0LC0 include an undervoltage release and auxiliary switches?","answer":"Yes, it includes an undervoltage release (universal trigger UNI) and two HQ auxiliary switches, plus a communication function."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5KQ32-0LC0","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/3VA2340-5KQ32-0LC0 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}}