{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ42-0HA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ42-0HA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0HA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0HA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 3VA2340-5JQ42-0HA0, 4-pole, 400 A frame, line protection, with shunt trip (STL), communication function, 187 kA interrupting at 240 V.","salesMarkdown":"The 400 A full-scale value is the continuous current rating at 40 °C, 45 °C, and 50 °C — it holds the full 400 A through that range without derating. Above 50 °C you step down: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C (–). The interrupting capacity is where this part earns its keep: 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 adjustable trip range runs from a minimum of 600 A up to the 4 000 A maximum, with an initial setting of 80 A, so it covers a wide band of overload and short-circuit protection settings. The communication function means it can report status or accept commands over a network, though the evidence doesn't specify which protocol. The breaker also has an undervoltage release option noted as 'No', so if you need UVR you'd look at a different suffix. Trip indicator is not fitted. The breaker measures 248 mm high, 184 mm wide, and 110 mm deep — that's 9.76 by 7.24 by 4.33 inches. It's a standard SENTRON 3VA2 form factor, so it mounts into the same Siemens panelboard and switchgear footprints as other 3VA2 frames of this size. ## Key specs at a glance for the integrator The supplied basic switch order code is 3VA2340-5JQ42-0AA0, which is the base breaker without the shunt trip — so this -0HA0 variant adds the STL. No auxiliary switch is fitted.","metaTitle":"Siemens SENTRON 3VA2340-5JQ42-0HA0 MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5JQ42-0HA0 molded case circuit breaker, 400 A frame, 4-pole, 187 kA interrupting at 240 V. Line protection, shunt trip, communication capable. Active produc","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":"Yes","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":"Yes","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":"3VA2340-5JQ42-0AA0","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"shunt trip (STL)","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":"3VA9688-0BL30","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":"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=486807&mlfb=3VA2340-5JQ42-0HA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ42-0HA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2340-5JQ42-0HA0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the interrupting capacity of this MCCB at 240 V?","answer":"The interrupting capacity at 240 V is 187 kA. At 415 V and 440 V it's 121 kA, at 500 V it's 75.6 kA, and at 690 V it's 7.5 kA."},{"question":"What is the depth of 3VA2340-5JQ42-0HA0?","answer":"The depth is 110 mm, which is 4.33 inches."},{"question":"Does this breaker have a shunt trip?","answer":"Yes, it includes a shunt trip release (STL). The base breaker without the shunt trip is order code 3VA2340-5JQ42-0AA0."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ42-0HA0","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/3VA2340-5JQ42-0HA0 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}}