{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0JC0, molded case circuit breaker, 4-pole, 400 A continuous rating, 187 kA breaking capacity at 240 V, line protection design with shunt trip and 2 auxiliary switches.","salesMarkdown":"## What this 400 A MCCB delivers The Siemens SENTRON 3VA2340-5HL42-0JC0 is a 4-pole molded case circuit breaker rated for 400 A continuous current at 40 °C through 50 °C without derating — it holds full rating across the typical switchroom ambient band. At 55 °C it still delivers 385 A, at 60 °C it gives 370 A, and at 70 °C it provides 340 A, so you can place it in a warmer enclosure or near other heat sources and still get useful capacity. Breaking capacity reaches 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 — the 415 V figure is the one that governs for most 400 V-class industrial distribution, and 121 kA covers nearly any fault level you will see downstream of a utility transformer. This is a line-protection design (not a motor-protector or feeder switch), so its trip curve and thermal-magnetic or electronic characteristics are tuned for cable and busbar protection. The breaker measures 184 mm wide, 248 mm tall, and 110 mm deep.","metaTitle":"Siemens 3VA2340-5HL42-0JC0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0JC0 molded case circuit breaker, 400 A continuous, 4-pole, 187 kA at 240 V. Current lifecycle. Sourced to order against RFQ.","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":"385 A","at 60 °C":"370 A","at 65 °C":"355 A","at 70 °C":"340 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"96 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2340-5HL42-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU320","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","Product Function / Grounding Protection":"No","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":"LI","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=258283&mlfb=3VA2340-5HL42-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0JC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2340-5HL42-0JC0 at 415 V?","answer":"At 415 V the breaking capacity is 121 kA. This is the relevant figure for 400 V-class industrial distribution systems and covers most fault levels downstream of a utility transformer."},{"question":"Does 3VA2340-5HL42-0JC0 include a shunt trip?","answer":"Yes, it includes a shunt trip (STL) release for remote tripping, plus two HQ auxiliary switches for status feedback."},{"question":"Where can I buy 3VA2340-5HL42-0JC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0JC0","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/3VA2340-5HL42-0JC0 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}}