{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker (MCCB), 3VA2140-5MN32-0KC0, 3-pole, 40 A, motor protection design, with shunt trip (STL) and 2 auxiliary switches HQ, breaking capacity 187 kA at 240 V.","salesMarkdown":"That means the internal trip curve and thermal-magnetic response are tuned for motor inrush and overload profiles, not just general distribution. It's a 3-pole, 40 A frame with phase failure detection built in (cite:), so if you lose a phase upstream, this breaker will see it and trip — a key feature for preventing single-phasing damage on a motor load. No derating curve to chase at elevated panel temps — it holds its rating at 70 °C ambient. That's unusual; most breakers start stepping down above 40 °C. For a panel builder or site engineer, this simplifies the thermal budget in a crowded enclosure. This MCCB carries a massive 187 kA interrupting rating at 240 V (cite:), dropping to 121 kA at 415 V and 440 V (cite:–), then 75.6 kA at 500 V (cite:). At 690 V it's still rated 3.7 kA (cite:). Those are the maximum fault currents it can safely clear without welding or rupturing. The short-time delay range is 4 to 17 seconds (cite:–), which gives you selectivity bandwidth downstream. If a feeder breaker needs to hold through a motor start (typically 6–10 seconds of locked-rotor current), you can set this to ride through without nuisance tripping on the main. ## Built-in accessories — no add-on modules needed No separate accessory kit to order and install; it's all integrated at the factory.","metaTitle":"Siemens 3VA2140-5MN32-0KC0 SENTRON MCCB, 40 A, 3-Pole, Motor","metaDescription":"Siemens 3VA2140-5MN32-0KC0 SENTRON molded case circuit breaker, 40 A rated, 3-pole motor protection with shunt trip and auxiliary switches. Breaking capacity 187 kA at 240 V. Curre","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","Height":"181 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":"3.7 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","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":"1.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA21405MN320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 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":"11 000 W","operating power / at AC-3 / at 400 V":"18 500 W","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","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":"160 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":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating Cycles) / Typical":"25 000","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/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569512&mlfb=3VA2140-5MN32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 480 V?","answer":"At 500 V it's rated 75.6 kA (cite:), which is the nearest published value for a 480 V system. At 415 V and 440 V it's 121 kA (cite:–)."},{"question":"What accessories come pre-installed on this breaker?","answer":"It ships with a shunt trip release (STL) for remote tripping (cite:) and two HQ auxiliary switches for status feedback (cite:). No separate accessory modules needed."},{"question":"Where can I buy 3VA2140-5MN32-0KC0 and how is it quoted?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0KC0","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/3VA2140-5MN32-0KC0 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}}