{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5HL32-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5HL32-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5HL32-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5HL32-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5HL32-0AE0, 3-pole molded case circuit breaker, 400 A rated continuous current, 187 kA interrupting capacity at 240 V AC, ETU320 electronic trip unit, 4 auxiliary switches HQ.","salesMarkdown":"The Siemens SENTRON 3VA2440-5HL32-0AE0 is a 3-pole molded case circuit breaker rated for a continuous current Iu of 400 A, with an interrupting capacity of 187 kA at 240 V AC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream. The electronic trip unit ETU320 provides adjustable long-time, short-time, and instantaneous protection curves, so you can shape selectivity with downstream breakers. Four HQ auxiliary switches (two form-C) are built in, giving the PLC or safety relay a direct status read without adding an external aux block. The 138 mm width and 110 mm depth fit standard MCCB mounting patterns in distribution panels; the 248 mm height leaves room for lug access above the line terminals. ## Thermal derating — what the 400 A rating really means at panel ambient At 55 °C it derates to 384 A, at 60 °C to 376 A, at 65 °C to 368 A, and at 70 °C to 360 A. That matters for a BOM line sized at 400 A: a 360 A effective rating at 70 °C may force a larger frame if the load is continuous. ## Interrupting capacity across system voltages This MCCB's interrupting capacity scales with system voltage: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. At the common 480 V class (which sits between the 440 V and 500 V ratings), expect performance near the 121 kA figure. That gives ample headroom for most industrial services — a typical 480 V transformer secondary with 5-6% impedance delivers fault current around 20-40 kA.","metaTitle":"Siemens 3VA2440-5HL32-0AE0 SENTRON MCCB, 400 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA2440-5HL32-0AE0 molded case circuit breaker, 3-pole, 400 A rated continuous current, 187 kA interrupting at 240 V. ETU320 release, 4 auxiliary switches. Current","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","title":"3VA2440-5HL32-0AE0","Height":"248 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"17 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"384 A","at 60 °C":"376 A","at 65 °C":"368 A","at 70 °C":"360 A","description":"circuit breaker 3VA2 IEC frame 630 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection ETU320, LI, In=400A overload protection Ir=160A...400A short-circuit protection Ii=1.5...12 x In nut keeper kit 4 auxiliary switches HQ","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"63.5 W","Auxiliary contact version":"4 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"400 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2440-5HL32-0AA0","Design of the auxiliary release":"Without auxiliary release","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","Design of the overcurrent release":"ETU320","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"17","Adjustable response value time / tr min.":"0.5","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"400 A","Adjustable response value current / li max.":"4 800 A","Adjustable response value current / li min.":"600 A","Adjustable response value current / lr min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"4","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"M","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=507306&mlfb=3VA2440-5HL32-0AE0"},"ai":{"faq":[{"question":"What is the interrupting capacity of this MCCB at 240 V?","answer":"At 240 V AC, the interrupting capacity is 187 kA — high enough for most utility-grade fault levels without requiring a current-limiting fuse upstream."},{"question":"What trip unit does the 3VA2440-5HL32-0AE0 use?","answer":"It uses the ETU320 electronic trip unit, which provides adjustable long-time, short-time, and instantaneous protection settings for coordination flexibility."},{"question":"Where can I buy 3VA2440-5HL32-0AE0 and how is it quoted?","answer":"This MCCB is sourced and quoted to order through independent distribution channels. Submit an RFQ for current pricing and availability; volume and project-quantity pricing is confirmed at quote time."},{"question":"How many auxiliary contacts does it include?","answer":"It includes 4 auxiliary switches (HQ type), typically configured as two form-C contacts for status feedback to a PLC or safety relay."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5HL32-0AE0","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/3VA2440-5HL32-0AE0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}