{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN32-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN32-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-5MN32-0BC0, 3-pole molded case circuit breaker, 40 A, motor protection design, undervoltage release, 2 auxiliary switches HQ, SCCR 187 kA at 240 V.","salesMarkdown":"The interrupting ratings climb to 187 kA at 240 V and hold 121 kA at 415/440 V, dropping to 75.6 kA at 500 V and 3.7 kA at 690 V — that SCCR curve tells you this breaker is sized for high-fault industrial distribution, not light commercial. Three poles, built-in undervoltage release (UVR), and phase failure detection are standard on this variant. The UVR drops the breaker if control voltage falls below the dropout threshold — essential for motor starters that need to prevent automatic restart after a brownout. Phase failure detection catches a lost phase before single-phasing cooks the motor windings. Two HQ auxiliary switches come factory-fitted, giving you status feedback without adding external contact blocks. The basic switch assembly carries order code 3VA21405MN320AA0 if you ever need to replace just the switching mechanism. At 500 V it still holds 75.6 kA, which covers most 480 V plant networks. The sharp drop to 3.7 kA at 690 V means this frame size is not intended for 690 V high-fault applications; if your system runs 690 V with fault currents above 3.7 kA, you need a larger frame or a current-limiting upstream device. Trip time is adjustable between 4 s and 17 s — that's the thermal-magnetic or electronic trip band for overload protection. A 4 s minimum clears fast for short circuits while the 17 s maximum gives the motor starting inrush room to pass without nuisance tripping. Set it tight for short-coupled loads (pumps, fans), wider for high-inertia starts (conveyors, crushers). The 4.1 W maximum power loss means minimal heat contribution inside a sealed panel; you won't need to oversize the enclosure for thermal management on this breaker alone. If you need Modbus or ground-fault, you're looking at a different suffix in the 3VA2 family.","metaTitle":"Siemens 3VA2140-5MN32-0BC0 SENTRON MCCB, 40 A, 3-Pole, Motor","metaDescription":"Siemens 3VA2140-5MN32-0BC0 SENTRON molded case circuit breaker, 40 A, 3-pole, motor protection design with undervoltage release and phase failure detection. SCCR 187 kA at 240 V. A","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","title":"3VA2140-5MN32-0BC0","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","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 3-pole, motor protection ETU350M, LSI, In=40A overload protection Ir=16A...40A short-circuit protection Isd=3...15 x Ir, Ii=15 x In nut keeper kit undervoltage release (UVR) 24V DC","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":"4.1 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":"undervoltage release (UVR)","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":"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":"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,"stockQuantity":0,"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=569652&mlfb=3VA2140-5MN32-0BC0"},"ai":{"faq":[{"question":"Does 3VA2140-5MN32-0BC0 include undervoltage release and phase failure protection?","answer":"Yes, it comes with an undervoltage release (UVR) and phase failure detection as standard. The UVR drops the breaker if control voltage falls, preventing automatic restart after a brownout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0BC0","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/3VA2140-5MN32-0BC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}