{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0BA0, molded case circuit breaker, 3-pole, 400 A, 187 kA interrupting at 240 V, motor protection design with undervoltage release.","salesMarkdown":"## 400 A MCCB with 187 kA interrupting capacity — motor protection variant The Siemens SENTRON 3VA2440-5MN32-0BA0 is a 3-pole molded case circuit breaker rated for 400 A continuous current across the full ambient range from 40 °C through 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V, so it handles high-fault utility feeds and large motor branch circuits without cascading upstream. This is the motor protection design variant, meaning the thermal-magnetic trip curve is shaped for motor starting inrush — it holds through the 4 to 17 second short-time delay window before clearing a bolted fault. No auxiliary switch is included on this order code, so if you need remote status feedback, plan for a separate aux contact module. The 400 A frame uses bolted lug connections; verify busbar spacing and lug kit compatibility against your existing panel layout. Maximum power loss is 66 W, so factor that into enclosure thermal rise calculations — especially in a sealed stainless steel enclosure where natural convection is limited.","metaTitle":"Siemens 3VA2440-5MN32-0BA0 SENTRON MCCB, 400 A, 187 kA","metaDescription":"Siemens SENTRON 3VA2440-5MN32-0BA0 molded case circuit breaker, 400 A rated, 187 kA interrupting at 240 V. Motor protection design with undervoltage release. Current lifecycle stag","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":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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":"Yes","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":"66 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2440-5MN32-0AA0","Design Of The Auxiliary Switch":"Without","Design Of The Auxiliary Release":"undervoltage release (UVR)","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":"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/0eb36652ce522f093395d6bd0dd27e34.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569893&mlfb=3VA2440-5MN32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2440-5MN32-0BA0 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."},{"question":"What is the interrupting capacity of 3VA2440-5MN32-0BA0 at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V."},{"question":"Does 3VA2440-5MN32-0BA0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) fitted as the auxiliary release."},{"question":"What are the physical dimensions of 3VA2440-5MN32-0BA0?","answer":"110 mm deep, 138 mm wide, and 248 mm tall."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0BA0","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/3VA2440-5MN32-0BA0 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}}