{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-7MN32-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-7MN32-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-7MN32-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7MN32-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker, 3VA2440-7MN32-0AB0, 3-pole, 400 A, motor protection design, 330 kA interrupting at 240 V.","salesMarkdown":"## Sizing and continuous rating The 3VA2440-7MN32-0AB0: This 3-pole SENTRON MCCB carries 400 A continuous across the full ambient range from 40 °C through 70 °C — no derate needed for a warm enclosure. That thermal stability means you size the feeder for 400 A and the breaker holds it at the top of a hot panel. ## Interrupting capacity by voltage Interrupting ratings climb with voltage: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. At 240 V the headroom is massive — enough for high-fault utility feeds. At 690 V the 9 kA figure is modest; verify it against your transformer's secondary fault current if you are on a 690 V system. ## Motor protection and trip characteristics Designed for motor protection with built-in phase failure detection — the breaker opens on loss of a phase, preventing single-phasing damage to the load. The adjustable short-time delay (4 s minimum, 17 s maximum) lets you coordinate with downstream starters or soft-starts so nuisance trips don't pull the whole feeder. ## Auxiliary switching and power loss Two HP auxiliary switches (form C) are factory-fitted — enough for a remote trip indication plus a status feedback to the PLC without adding a separate accessory. Maximum power dissipation is 63.5 W at rated load, so account for that heat in the enclosure thermal calculation, especially if the breaker is enclosed with other heat sources.","metaTitle":"Siemens 3VA2440-7MN32-0AB0 SENTRON MCCB, 400 A, 3-Pole, Moto","metaDescription":"Siemens 3VA2440-7MN32-0AB0 SENTRON MCCB, 400 A continuous, 3-pole, motor protection design with phase failure detection. Interrupting capacity 330 kA at 240 V. Sourced to order aga","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":"17 s","Minimum":"4 s","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]":"5.43 in","Height [In]":"9.76 in","Limited To 1 S":"5 kA","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Motor protection","Communication Function":"No","Phase Failure Detection":"Yes","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","Of The Supplied Basic Switch":"#BEZUG!","Design Of The Auxiliary Switch":"2 auxiliary switches HP","Design Of The Auxiliary Release":"Without auxiliary release","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"90 000 W","operating power / at AC-3 / at 400 V":"160 000 W","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":"630 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA11","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"}},"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=628695&mlfb=3VA2440-7MN32-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-7MN32-0AB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-7MN32-0AB0","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/3VA2440-7MN32-0AB0 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}}