{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7HN42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7HN42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7HN42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7HN42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-7HN42-0AA0, 4-pole molded case circuit breaker, 400 A at 40 °C, ETU350 electronic trip, line protection, 110 mm depth × 184 mm width × 248 mm height.","salesMarkdown":"## What the interrupting ratings mean for panel coordination The Siemens 3VA2440-7HN42-0AA0 is a 4-pole SENTRON molded case circuit breaker rated 400 A continuous at 40 °C through 70 °C — no derating needed across that full band, which simplifies panel layout when ambient runs high. The interrupting ratings climb to 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. Those numbers govern series-coordination headroom with downstream breakers: at 415 V the 242 kA SCCR covers most industrial main or feeder applications without requiring a current-limiting upstream device. The 5 kA limited-to-1-second rating is the short-time withstand for selective coordination — if your scheme relies on intentional delay, that is the window. ## Trip unit and N-conductor protection The overcurrent release is the ETU350 electronic trip unit — adjustability for the N-conductor protection is selectable OFF, 50%, or 100% of the phase rating. That matters when the neutral is undersized or when you want full protection on a 100%-rated neutral. The 3VA2440-7HN42-0AA0 is designated for line protection; it does not carry a voltage-trip or undervoltage release, nor communication functions or ground-fault monitoring. If you need those, the ETU350 platform supports them on other variants, but this order code is a straight feeder breaker. Dimensions: 110 mm depth, 184 mm width, 248 mm height. That is a 4-pole frame sized for a standard MCCB cubicle or distribution panel — the width matches typical 4-pole SENTRON footprints, so a panel cut-out or bus-bar layout designed for a 3VA2 4-pole breaker will accept this unit without rework. IP40 on the front (finger-safe), no trip indicator, no undervoltage release coil. Maximum power loss 63.5 W — budget that as heat in the enclosure.","metaTitle":"Siemens 3VA2440-7HN42-0AA0 SENTRON MCCB, 400 A, 4-Pole, ETU3","metaDescription":"Siemens SENTRON 3VA2440-7HN42-0AA0 molded case circuit breaker, 400 A continuous, 4-pole, ETU350 release. Line protection. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 kA","at 690 V":"9 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"400 A","at 60 °C":"400 A","at 65 °C":"400 A","at 70 °C":"400 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"4","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"63.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"400 A","Ground-Fault Monitoring Version":"Without","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%","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"630 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"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=39176&mlfb=3VA2440-7HN42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7HN42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2440-7HN42-0AA0?","answer":"Pricing and availability are confirmed at quote time against an RFQ through independent distribution. Submit a request to receive a current quote with lead time."},{"question":"What compliance documentation does this brand provide for 3VA2440-7HN42-0AA0?","answer":"As a Siemens SENTRON MCCB, standard compliance documentation includes IEC/EN 60947-2, UL 489, CSA C22.2 No. 5, and RoHS/REACH declarations. The ETU350 trip unit is CE-marked and carries the relevant low-voltage directive conformity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7HN42-0AA0","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/3VA2440-7HN42-0AA0 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}}