{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5KP32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5KP32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5KP32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5KP32-0BC0, molded case circuit breaker, 3-pole, 400 A, 187 kA at 240 V, ETU850 electronic trip unit, line protection, communication function.","salesMarkdown":"## What this 400 A MCCB delivers The Siemens 3VA2340-5KP32-0BC0 is a SENTRON molded case circuit breaker rated for 400 A continuous at 40 °C, with the ETU850 electronic trip unit handling line protection across a 3-pole configuration. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V — enough headroom for high-fault utility feeds or transformer secondaries where SCCR coordination matters. The ETU850 release supports communication functions, meaning this breaker can talk to a BMS or PLC for remote trip indication and load monitoring — not just a dumb overcurrent device. Full 400 A holds from 40 °C through 50 °C, then steps down: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. The storage limit governs shipping and idle spares, not running conditions. ## Physical fit and auxiliary wiring Verify the mounting footprint against your existing busbar or cable lug layout before ordering. Comes with 2 HQ auxiliary switches and an undervoltage release (UVR) integrated. The UVR design means the breaker trips on loss of control voltage — common for emergency-stop chains or undervoltage protection schemes. If those are required, look at the 3VA2 with GF or the ETU860 option.","metaTitle":"Siemens 3VA2340-5KP32-0BC0 SENTRON MCCB, 400 A, 187 kA","metaDescription":"Siemens 3VA2340-5KP32-0BC0 SENTRON molded case circuit breaker, 400 A rated at 40 °C, 187 kA breaking at 240 V. ETU850 release, communication capable. Active production, quoted on","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","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":"375 A","at 60 °C":"350 A","at 65 °C":"325 A","at 70 °C":"300 A","Trip indicator":"No","Number of poles":"3","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":"Yes","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 HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"Yes","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2340-5KP32-0AA0","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","Design of the overcurrent release":"ETU850","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","Adjustable response value time / tsd max.":"0.5 s","Adjustable response value time / tsd min.":"0.05 s","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","Adjustable response value current / Isd max.":"4 000 A","Adjustable response value current / Isd min.":"240 A","Neutral conductors / upgradeable/retrofittable":"Yes","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LSI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=438982&mlfb=3VA2340-5KP32-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP32-0BC0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU850 electronic trip unit, which includes communication capability for remote monitoring and control."},{"question":"Does 3VA2340-5KP32-0BC0 include an undervoltage release?","answer":"Yes, it includes an integrated undervoltage release (UVR) that trips the breaker when control voltage drops below the dropout threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5KP32-0BC0","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/3VA2340-5KP32-0BC0 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}}