{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5JQ32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5JQ32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Molded case circuit breaker, 3VA2340-5JQ32-0AC0, 3-pole, 400 A rated current at 40 °C, line protection, 187 kA breaking capacity at 240 V, 110 mm depth, 138 mm width, 248 mm height.","salesMarkdown":"Its job is to clear faults fast enough that upstream gear doesn't trip. Above that, it derates: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. If your enclosure hits 70 °C, you lose 100 A of headroom; plan the thermal budget accordingly. At 240 V it clears 187 kA — that's utility-grade fault current. At 500 V it drops to 75.6 kA, and at 690 V it's 7.5 kA. If your system runs 690 V, this is not the breaker for that bus; the 7.5 kA rating is too low for most industrial 690 V applications. The 110 mm depth fits shallow enclosures with wiring room. Maximum power dissipation is 96 W at full rated load. ## Trip unit and adjustability The electronic trip unit is adjustable between 600 A and 4 000 A — that's the short-circuit and ground-fault pickup range, not the continuous current rating. The continuous rating is fixed at 400 A (the frame size). The trip indicator is not present on this variant, so there's no local mechanical flag showing the breaker tripped on fault vs. manual open. No undervoltage release or voltage-triggered shunt trip fitted. For remote trip, use the basic switch variant or add an external release module. ## Auxiliary contacts and communication These are wired back to a PLC or status lamp to indicate open/closed state of the breaker. Communication function is present for remote monitoring and trip data.","metaTitle":"Siemens SENTRON 3VA2340-5JQ32-0AC0 MCCB, 400 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA2340-5JQ32-0AC0 molded case circuit breaker, 400 A rated at 40 °C, 3-pole, line protection. Breaking capacity 187 kA at 240 V. Current production. Quoted to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 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]":"5.43 in","Height [In]":"9.76 in","Initial Value":"80 A","Trip Indicator":"No","Number Of Poles":"3","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":"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":"3VA2340-5JQ32-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Summation current formation L-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 160%","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":"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=388847&mlfb=3VA2340-5JQ32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5JQ32-0AC0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA2340-5JQ32-0AC0 have communication capability?","answer":"Yes, communication function is present, allowing remote monitoring and trip data retrieval. The exact protocol is not specified here, but it integrates into a managed power distribution scheme."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5JQ32-0AC0","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/3VA2340-5JQ32-0AC0 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}}