{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HN42-0CL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HN42-0CL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0CL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0CL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HN42-0CL0, molded case circuit breaker, 400 A, 4-pole, line protection, with undervoltage release and auxiliary switches, interrupting capacity 187 kA at 240 V.","salesMarkdown":"Its interrupting 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 — so it handles high-fault-current service entrances and large motor branch circuits without cascading upstream. The 400 A frame holds the rating across 40–50 °C ambient; above that it derates linearly to 340 A at 70 °C, which matters when the breaker sits in a crowded enclosure with limited airflow. The auxiliary and alarm contacts give the PLC or SCADA a positive status of the breaker position, not just a shunt-trip signal. Dimensions are 248 mm high, 184 mm wide, and 110 mm deep. Depth of 110 mm leaves clearance for rear-connected busbars and cable lugs inside a typical 600 mm deep enclosure. The breaker accepts front-mounted rotary handles or motor operators from the SENTRON accessory family. The interrupting ratings (187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 500 V, 7.5 kA at 690 V) define the maximum fault current the breaker can safely clear at each voltage level. The thermal derating table (385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C) tells you the actual ampacity when the breaker is in a warm panel; never size a feeder at the 40 °C rating if the ambient inside the enclosure exceeds that.","metaTitle":"Siemens 3VA2340-5HN42-0CL0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HN42-0CL0 molded case circuit breaker, 400 A continuous, 4-pole, interrupting capacity 187 kA at 240 V. Active production. Quoted 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 + 1 electrical 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":"3VA9608-0BB24","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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=300376&mlfb=3VA2340-5HN42-0CL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HN42-0CL0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5HN42-0CL0 and what is the lead time?","answer":"This MCCB is sourced and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time through independent distribution channels."},{"question":"What is the interrupting capacity of 3VA2340-5HN42-0CL0 at different voltages?","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. The 690 V rating is the limiting factor — verify your available fault current at that voltage."},{"question":"Does 3VA2340-5HN42-0CL0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) plus two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ design)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HN42-0CL0","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/3VA2340-5HN42-0CL0 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}}