{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-6JQ32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-6JQ32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-6JQ32-0CH0, molded case circuit breaker, 3-pole, 400 A, 242 kA at 240 V, line protection, ETU560, undervoltage release, communication function.","salesMarkdown":"The Siemens SENTRON 3VA2340-6JQ32-0CH0 is a 3-pole molded case circuit breaker rated for 400 A continuous current (Iu) across ambient temperatures up to 50 °C, derating to 300 A at 70 °C. The interrupting capacity hits 242 kA at 240 V, 187 kA at 415/440 V, and still 40 kA at 690 V, which means it can handle high-fault scenarios downstream of large transformers or in industrial mains distribution without needing a current-limiting upstream device. The 138 mm width for a 3-pole 400 A frame is typical for SENTRON 3VA2 breakers; verify the existing panel cutout if replacing a different manufacturer's 400 A frame, as the mounting hole pattern may differ. ## Thermal management — 98.5 W max power loss At full rated current, the breaker dissipates up to 98.5 W. In a sealed or tightly packed enclosure, that heat needs to be considered for the internal temperature rise — especially since the breaker itself derates above 55 °C. For a panel running at 40 °C ambient, the 400 A rating is safe; if the enclosure internal ambient hits 60 °C, you're down to 350 A.","metaTitle":"Siemens 3VA2340-6JQ32-0CH0 SENTRON MCCB, 400 A, 242 kA","metaDescription":"Siemens SENTRON 3VA2340-6JQ32-0CH0 molded case circuit breaker, 400 A rated current, 242 kA breaking capacity at 240 V, 3-pole, line protection, ETU560 trip unit, undervoltage rele","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":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"40 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":"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 + 1 trip alarm switch 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":"3VA2340-6JQ32-0AA0","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Summation current formation L-conductor","Of The Integrated Auxiliary Trip":"3VA9608-0BB24","Design of the overcurrent release":"ETU560","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 / lg max.":"400 A","Adjustable response value current / lg min.":"80 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","Ground fault protection can be switched ON/OFF":"Yes","Neutral conductors / upgradeable/retrofittable":"Yes","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LSIG","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"H","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=13621&mlfb=3VA2340-6JQ32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-6JQ32-0CH0/alternatives.json"},"ai":{"faq":[{"question":"What trip unit does 3VA2340-6JQ32-0CH0 use?","answer":"It uses the ETU560 electronic trip unit, which provides adjustable long-time, short-time, instantaneous, and ground-fault protection curves. This makes it suitable for selective coordination in a distribution system."},{"question":"Does 3VA2340-6JQ32-0CH0 include an undervoltage release?","answer":"Yes, it comes with an undervoltage release (UVR) as standard, part of the auxiliary release design. It also includes a trip indicator and 2 auxiliary switches plus 1 trip alarm switch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-6JQ32-0CH0","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/3VA2340-6JQ32-0CH0 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}}