{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5HN32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5HN32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5HN32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5HN32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5HN32-0KC0, molded case circuit breaker, 3-pole, 400 A rated continuous current, line protection version, ETU350 electronic trip unit, shunt trip release, 2 HQ auxiliary switches.","salesMarkdown":"Breaking capacity is the headline here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. ## Thermal performance and derating At 55 °C it derates to 384 A, at 60 °C to 376 A, at 65 °C to 368 A, and at 70 °C to 360 A. If your panel internal ambient runs above 50 °C — common in compact, high-density enclosures — you lose about 4 A per 5 °C rise. The maximum power loss is 63.5 W, which matters for enclosure thermal calculations when grouping several breakers. That 138 mm width for a 3-pole 400 A frame is standard for SENTRON 3VA2 — it fits the same mounting footprint as other breakers in the series, so panel cutouts and busbar layouts transfer. ## Auxiliaries and release configuration Two HQ auxiliary switches are fitted (form C, high-qualified for signal reliability). The basic switch assembly is order code 3VA2440-5HN32-0AA0; the integrated auxiliary trip module is 3VA9688-0BL33. Mechanical endurance is rated at 15,000 operations — typical for a 400 A frame in distribution duty where it cycles infrequently (a few times per year for maintenance isolation). No voltage trip indicator on this variant.","metaTitle":"Siemens 3VA2440-5HN32-0KC0 SENTRON MCCB, 400 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA2440-5HN32-0KC0 molded case circuit breaker, 400 A rated, 3-pole, line protection. Breaking capacity 187 kA at 240 V. ETU350 release, shunt trip. Current product","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":"384 A","at 60 °C":"376 A","at 65 °C":"368 A","at 70 °C":"360 A","Trip indicator":"No","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":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"63.5 W","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2440-5HN32-0AA0","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":"ETU350","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","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.":"4 800 A","Adjustable response value current / li min.":"4 800 A","Adjustable response value current / lr min.":"160 A","Adjustable response value current / Isd max.":"0 A","Adjustable response value current / Isd min.":"0 A","Neutral conductors / upgradeable/retrofittable":"No","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":"630 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/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=356861&mlfb=3VA2440-5HN32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5HN32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA2440-5HN32-0KC0 include a shunt trip?","answer":"Yes, it ships with a shunt trip (STL) release for remote tripping, plus two HQ auxiliary switches. No undervoltage release or communication module on this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5HN32-0KC0","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/3VA2440-5HN32-0KC0 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}}