{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ42-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ42-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5JQ42-0CC0, molded case circuit breaker, 4-pole, 400 A, line protection, 187 kA at 240 V, undervoltage release, with communication function.","salesMarkdown":"## Siemens 3VA2340-5JQ42-0CC0 — 400 A SENTRON MCCB, 4-Pole, 187 kA SCCR Its interrupting capacity hits 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V — so it handles high-fault utility feeds and transformer secondaries without cascading upstream. At 415/440 V the 121 kA rating still covers most industrial service-entrance and sub-distribution scenarios. The drop to 75.6 kA at 500 V and 7.5 kA at 690 V means at 690 V you'll need to verify available fault current against the lower limit; if the installation exceeds 7.5 kA, a current-limiting upstream device or a higher-rated frame is required. The 400 A continuous rating holds flat from 40 °C through 50 °C, then derates to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C — a 25% drop at the top end, so a panel running hot needs the thermal curve consulted before loading. Dimensions: 248 mm height, 184 mm width, 110 mm depth (9.76 × 7.24 × 4.33 in). Four-pole frame with line-side and load-side lugs — 80 A initial trip setting, 400 A full-scale value. The communication function allows remote monitoring and control via the SENTRON bus system — no separate gateway module needed for basic data exchange.","metaTitle":"Siemens 3VA2340-5JQ42-0CC0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5JQ42-0CC0 molded case circuit breaker, 400 A, 4-pole, line protection. SCCR 187 kA at 240 V. Undervoltage release, comms ready. Sourced to order. Request q","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","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"7.5 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","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"400 A","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"98.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2340-5JQ42-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Summation current formation L + N conductor","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU560","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 20% to 100%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB24","Product Function / Grounding Protection":"Yes","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSIG","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=236468&mlfb=3VA2340-5JQ42-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0CC0/alternatives.json"},"ai":{"faq":[{"question":"What are the key interrupting ratings for the 3VA2340-5JQ42-0CC0?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. Continuous current rating is 400 A from 40 °C to 50 °C, then derates to 300 A at 70 °C."},{"question":"Where can I buy the 3VA2340-5JQ42-0CC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the physical size of the 3VA2340-5JQ42-0CC0?","answer":"248 mm high, 184 mm wide, 110 mm deep (9.76 × 7.24 × 4.33 in)."},{"question":"Does the 3VA2340-5JQ42-0CC0 include an undervoltage release and auxiliary switches?","answer":"Yes, it includes an undervoltage release (UVR) and two HQ auxiliary switches as standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0CC0","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/3VA2340-5JQ42-0CC0 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}}