{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HM42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HM42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HM42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HM42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HM42-0AA0, molded case circuit breaker, 400 A continuous, 4-pole, line protection, 187 kA at 240 V, 121 kA at 415 V.","salesMarkdown":"Its 800 V rated insulation voltage means it's built for 690 VAC systems with margin — common in heavy industrial plants running 400–690 V motor control centers. Breaking capacity is the headline: 187 kA at 240 VAC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. Thermal derating is published: full 400 A up to 50 °C ambient (–), then 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C. Ground-fault monitoring uses summation current formation on L + N conductors — it watches the vector sum of line and neutral, so it catches leakage to ground without a separate GFCI module. That's useful for equipment protection on solidly-grounded wye systems where you want to trip on ground faults but don't need a dedicated relay. Dimensions: 248 mm tall, 184 mm wide, 110 mm deep. That 184 mm width for a 4-pole 400 A frame is standard — it occupies the same footprint as other SENTRON 3VA2 breakers in this rating class. For a sealed panel, factor that into the thermal calculation; for a ventilated one, it's manageable.","metaTitle":"Siemens 3VA2340-5HM42-0AA0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HM42-0AA0 molded case circuit breaker, 400 A continuous, 4-pole, 187 kA breaking capacity at 240 VAC. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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","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":"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","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":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","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":"LIG","number of CO contacts / for auxiliary contacts":"0","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=289320&mlfb=3VA2340-5HM42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HM42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2340-5HM42-0AA0?","answer":"Submit an RFQ through this listing. We source this active-production part through independent distribution channels and confirm availability and current pricing at quote time — no stock count or price is published here."},{"question":"What is 3VA2340-5HM42-0AA0's listed depth (110 mm) on this component line?","answer":"The depth is 110 mm, or 4.33 inches. That's the front-to-back dimension including the breaker body — not counting handle projection or rear terminal extensions."},{"question":"What is 3VA2340-5HM42-0AA0's listed width (184 mm) on this component line?","answer":"The width is 184 mm, or 7.24 inches. That's the standard 4-pole frame width for this SENTRON 3VA2 rating class."},{"question":"Will 3VA2340-5HM42-0AA0 drop into a panel that was specified around 3VA2116-5HM42-0CC0 without rewiring?","answer":"Not without checking the frame size and mounting pattern. The 3VA2340 is a 400 A frame; the 3VA2116 is a 160 A frame. Different physical dimensions and bus connections — you'd need to verify the cutout and terminal spacing before assuming a drop-in swap."},{"question":"What compliance documentation does this brand provide for 3VA2340-5HM42-0AA0 (RoHS, REACH, UL, IEC)?","answer":"As a Siemens SENTRON product, this MCCB carries the standard compliance documentation for industrial circuit breakers — UL 489, IEC 60947-2, RoHS, and REACH declarations are available from Siemens upon request. The 800 V rated insulation voltage confirms IEC 60947-2 design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HM42-0AA0","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/3VA2340-5HM42-0AA0 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}}