{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5KP32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5KP32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5KP32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5KP32-0KH0, molded case circuit breaker, 3-pole, 400 A, ETU850 electronic trip unit, line protection, 110 mm depth × 138 mm width × 248 mm height.","salesMarkdown":"## What this 400 A MCCB carries — and where the rating matters Breaking capacity climbs to 187 kA at 240 V and holds 121 kA at 415 V and 440 V, then drops to 75.6 kA at 500 V and 17 kA at 690 V; that 121 kA at 415 V is the number to check against your transformer fault current. Thermal derating starts at 55 °C: the breaker holds full 400 A up to 50 °C, then steps down to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. If your panel ambient runs toward 60 °C, you lose 50 A of headroom — factor that into the feeder sizing. The shunt trip (STL) design of the auxiliary release allows remote tripping from an E-stop or PLC output. Depth of 110 mm leaves room behind the gland plate for cable bending radius on 400 A lugs. Maximum power loss is 96 W at rated current. That heat has to leave the enclosure — if this sits in a multi-breaker lineup, calculate the cumulative dissipation against your panel cooling. The 15 000-cycle latching endurance tells you it's built for occasional switching, not daily motor starting.","metaTitle":"Siemens 3VA2340-5KP32-0KH0 SENTRON MCCB, 400 A, 3-Pole","metaDescription":"Siemens 3VA2340-5KP32-0KH0 SENTRON molded case circuit breaker, 400 A rated continuous current, 3-pole, ETU850 electronic trip unit, 187 kA at 240 V. Quoted 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":"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":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"Yes","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"96 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":"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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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":"3","Protective function of the overcurrent release":"LSI","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=73210&mlfb=3VA2340-5KP32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5KP32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does this MCCB use?","answer":"The ETU850 electronic trip unit, which provides adjustable long-time, short-time, instantaneous, and ground-fault protection curves."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5KP32-0KH0","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/3VA2340-5KP32-0KH0 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}}