{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0AD0, molded case circuit breaker, 3-pole, 400 A, motor protection design, phase failure detection, 3 auxiliary switches HQ.","salesMarkdown":"The Siemens SENTRON 3VA2440-5MN32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It is specifically designed for motor protection, with built-in phase failure detection that trips the breaker when one phase drops out — a common cause of single-phasing damage on three-phase motor loads. The interrupting ratings are 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 — the 415 V figure is the one most panel builders will reference for a 400 V class distribution system. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — the 138 mm width is the standard 3-pole MCCB footprint for this class, so it drops into existing SENTRON mounting bases or DIN-rail adapters without panel rework. The breaker ships with three HQ auxiliary switches integrated (design of the auxiliary switch: 3 auxiliary switches HQ), and the basic switch variant is 3VA2440-5MN32-0AA0 — the -0AD0 suffix adds the auxiliary switch configuration. The 400 A rating at 70 °C means this breaker handles full motor FLA without a temperature derate in a warm enclosure — many MCCBs start derating above 40 °C, so this is a genuine advantage for tightly packed panels. Phase failure detection is an integrated function, not an add-on module — if you are specifying motor protection, this saves an auxiliary relay and a wiring step. The 121 kA SCCR at 415 V gives headroom for high-fault installations downstream of a large transformer; the 9 kA at 690 V is the ceiling for 690 V systems where fault current is typically lower.","metaTitle":"Siemens 3VA2440-5MN32-0AD0 SENTRON MCCB, 400 A, 3-Pole, Moto","metaDescription":"Siemens SENTRON 3VA2440-5MN32-0AD0 molded case circuit breaker, 400 A, 3-pole, motor protection design with phase failure detection. Rated 187 kA at 240 V, 121 kA at 415 V. 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","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":"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":"3VA2440-5MN32-0AA0","Design Of The Auxiliary Switch":"3 auxiliary switches HQ","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=569887&mlfb=3VA2440-5MN32-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0AD0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0AD0","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/3VA2440-5MN32-0AD0 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}}