{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN42-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN42-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HN42-0BH0, molded case circuit breaker, 4-pole, 400 A continuous at 40 °C, 187 kA interrupting at 240 V, with undervoltage release and auxiliary switches.","salesMarkdown":"The Siemens SENTRON 3VA2340-5HN42-0BH0 is a 4-pole molded case circuit breaker (MCCB) rated for 400 A continuous at 40 °C, with a maximum interrupting capacity of 187 kA at 240 V. The kit is complete — no loose accessories to chase down. At 240 V this breaker clears 187 kA — that is the full short-circuit rating for a 400 A frame, giving the site electrical engineer headroom for high-fault panels. At 415 V and 440 V it still holds 121 kA, dropping to 75.6 kA at 500 V and 7.5 kA at 690 V. The 400 A frame means the thermal-magnetic trip unit is sized for the main feeder, not a branch; selectivity with downstream 3VA2 breakers requires a coordination study, but the interrupting curve is published for that work. Above that it derates linearly: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C. The body dimensions — 248 mm high, 184 mm wide, 110 mm deep — fit a standard MCCB cutout; the 110 mm depth leaves clearance for rear-access cable connections in a 600 mm deep enclosure.","metaTitle":"Siemens 3VA2340-5HN42-0BH0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HN42-0BH0 molded case circuit breaker, 400 A continuous at 40 °C, 4-pole, 187 kA interrupting at 240 V. Current lifecycle. Available 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":"4 000 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":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","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":"3VA2340-5HN42-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU350","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"LSI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=289685&mlfb=3VA2340-5HN42-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HN42-0BH0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is 3VA2340-5HN42-0BH0's interrupting capacity at 240 V?","answer":"It clears 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V."},{"question":"What accessories ship with this MCCB?","answer":"The breaker ships with an integrated undervoltage release (UVR) and a factory-fitted auxiliary switch block containing 2 auxiliary switches plus 1 trip alarm switch HQ. No loose accessories to order separately."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0BH0","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/3VA2340-5HN42-0BH0 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}}