{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2440-5MN32-0KL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2440-5MN32-0KL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0KL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0KL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2440-5MN32-0KL0, molded case circuit breaker, motor protection version, 3-pole, 400 A rated current, 187 kA breaking capacity at 240 V.","salesMarkdown":"That 400 A holds steady at 40 °C, 45 °C, 50 °C, 55 °C, 60 °C, 65 °C, and 70 °C (through), so if your panel runs hot near a motor starter lineup, this breaker doesn't force a downsized cable or a bumped frame size. Interrupting capacity is what separates this from a standard distribution breaker: 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 (through). At 240 V that's a 187 kA rating — enough for high-fault infrastructure like a large industrial service entrance or a motor control center fed by a big transformer. There's no undervoltage release and no communication module, so this is a straight thermal-magnetic or electronic-trip MCCB — no fieldbus, no remote open/close. Keep that in mind if the spec called for a communicating breaker. The 110 mm depth means it clears a 120 mm deep enclosure without the cover bulging. The supplied basic switch order code is 3VA2440-5MN32-0AA0 — that's the bare breaker without the auxiliary contact block. The -0KL0 suffix on the seed code adds the HQ auxiliary contact set. If you already have a panel with the -0AA0 and need the alarm contacts, you can swap the auxiliary block rather than replace the whole breaker. Maximum power loss is 63.5 W. That's the heat the breaker dumps into the enclosure at full rated current. In a sealed panel with multiple breakers, that heat adds up — factor it into the ventilation or derating calculation if the ambient inside the enclosure climbs toward the 70 °C operating max.","metaTitle":"Siemens 3VA2440-5MN32-0KL0 SENTRON MCCB, 400A, 187kA at 240V","metaDescription":"Siemens 3VA2440-5MN32-0KL0 SENTRON molded case circuit breaker, 400A rated, 187kA interrupting at 240V. Motor protection version with phase failure detection. Current production. Q","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","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","Product version":"Motor protection","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","Phase Failure Detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"63.5 W","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2440-5MN32-0AA0","Courant permanent assigné Iu":"400 A","Ground-Fault Monitoring Version":"Without","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","reference code / acc. to IEC 81346-2":"Q","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","Undervoltage Release With Leading Contact":"No","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"6 000 A","Adjustable response value current / li min.":"6 000 A","Neutral conductors / upgradeable/retrofittable":"No","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","Max. rated operational current of the frame size":"630 A","Mechanical Service Life (Switching 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=569916&mlfb=3VA2440-5MN32-0KL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2440-5MN32-0KL0/alternatives.json"},"ai":{"faq":[{"question":"Does this breaker include phase failure detection?","answer":"Yes, phase failure detection is built in. It protects motors from single-phasing by tripping on an unbalanced or lost phase."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2440-5MN32-0KL0","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/3VA2440-5MN32-0KL0 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}}