{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ42-0JL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ42-0JL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0JL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0JL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5JQ42-0JL0, molded case circuit breaker, 4-pole, 400 A rated continuous current, breaking capacity 187 kA at 240 V, ETU560 electronic trip unit, line protection version.","salesMarkdown":"It carries a breaking capacity of 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 500 V — numbers that tell you it can interrupt massive fault currents without letting an arc cascade upstream. That thermal performance matters when you're packing this breaker into a crowded panel with other heat sources; you don't lose headroom just because the ambient creeps up. The rated insulation voltage Ui of 800 V means it's rated for 690 V systems with margin, and the 4-pole design lets you switch all three phases plus neutral in a single unit — common in North American 277/480 V wye or European 400/230 V TN systems. Dimensions of 248 mm high by 184 mm wide by 110 mm deep fit standard MCCB footprints, so it drops into existing switchboard cutouts without panel rework. The ETU560 overcurrent release is a programmable electronic trip unit that supports LSI protection (long-time, short-time, instantaneous) and includes ground-fault monitoring via summation current formation on L + N conductors. That's enough status feedback for a PLC to know whether the breaker is on, off, or tripped — no separate relay interface needed. Communication function is built in, so it can talk to a higher-level system for energy monitoring or remote control without an add-on module.","metaTitle":"Siemens 3VA2340-5JQ42-0JL0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens 3VA2340-5JQ42-0JL0 SENTRON molded case circuit breaker, 400 A continuous, 4-pole, 187 kA breaking at 240 V. ETU560 trip unit. Active production. Available 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":"184 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":"4","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 + 1 electrical 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":"3VA2340-5JQ42-0AA0","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Summation current formation L + N conductor","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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":"No","Number of CO contacts / for auxiliary contacts":"4","Protective function of the overcurrent release":"LSIG","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=42771&mlfb=3VA2340-5JQ42-0JL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0JL0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2340-5JQ42-0JL0 at 415 V?","answer":"At 415 V the breaking capacity is 121 kA; at 440 V it is also 121 kA, and at 500 V it drops to 75.6 kA. At 690 V it is 17 kA."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU560 electronic overcurrent release, which provides adjustable LSI protection curves and includes ground-fault monitoring via summation current on L + N."},{"question":"Where can I buy 3VA2340-5JQ42-0JL0 and what is the lead time?","answer":"We source and quote this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number here, just a firm quote when you ask."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0JL0","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/3VA2340-5JQ42-0JL0 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}}