{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0BL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0BL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0BL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0BL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0BL0, molded case circuit breaker, 3-pole, 400 A, motor protection design, 121 kA at 415 V, with undervoltage release and auxiliary switches.","salesMarkdown":"The interrupting capacity sits at 121 kA at 415 V, dropping to 75.6 kA at 500 V and 9 kA at 690 V, so it handles high-fault industrial distribution without cascading upstream. The 400 A rating is flat across the full 40–70 °C ambient window, which is unusual — most MCCBs start derating above 40 °C. That means this breaker holds its full capacity in a hot panel or near a motor starter without oversizing. The interrupting curve is steep: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 500 V, 9 kA at 690 V. At 690 V the 9 kA figure is the limiting case for high-voltage industrial loads. The 138 mm width (5.43 in) is the key panel-space number; it fits a standard 3-pole MCCB cutout in most switchboards. The basic switch core is order code 3VA2440-5MN32-0AA0, so the -0BL0 suffix adds the UVR and auxiliary switch complement. Mounts in a standard switchboard or motor control center (MCC) bucket. The 110 mm depth leaves clearance for rear-connected bus bars or cable lugs. The UVR coil draws its signal from the line side; verify the control voltage matches the panel's auxiliary supply before energizing. The auxiliary switch block provides dry contacts rated for standard 24 VDC PLC inputs — no external interposing relay needed for status monitoring.","metaTitle":"Siemens 3VA2440-5MN32-0BL0 SENTRON MCCB, 400 A, 3-Pole, Moto","metaDescription":"Siemens SENTRON 3VA2440-5MN32-0BL0 molded case circuit breaker, 400 A at 40-70°C, 121 kA at 415 V, 3-pole motor protection with UVR. Sourced to order.","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":"Yes","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":"2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ","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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","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=569896&mlfb=3VA2440-5MN32-0BL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0BL0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity at 415 V?","answer":"121 kA at 415 V, with 187 kA at 240 V and 75.6 kA at 500 V."},{"question":"What accessories are integrated on this breaker?","answer":"It includes an undervoltage release (UVR), 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch — all factory-fitted."},{"question":"Where can I buy 3VA2440-5MN32-0BL0?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0BL0","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/3VA2440-5MN32-0BL0 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}}