{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN32-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN32-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, molded case circuit breaker (MCCB), 3VA2140-5MN32-0DC0, 3-pole, 40 A rated at 40 °C, 121 kA breaking capacity at 415 V, motor protection design with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA2140-5MN32-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuously at 40 °C, with no derating needed up to 70 °C — the full 40 A holds across the entire ambient range. The design is explicitly for motor protection, with phase failure detection built in, so it tracks the load current on all three phases and trips on an open phase before the motor single-phases to failure. ## Auxiliary releases and switch configuration The UVR drops the breaker on loss of control voltage — standard for emergency-stop chains or undervoltage protection schemes where the load must not auto-restart after a dip. The two auxiliary switches provide status feedback (open/closed) to a PLC or indication lamp, with HQ designation meaning high-quantity switching cycles for frequent signaling. The base switch is order code 3VA21405MN320AA0, so the UVR and aux switches are integrated at the factory, not field-added. The 86 mm depth leaves clearance for rear-connected busbars or cable lugs in a typical 200 mm deep enclosure. ## Ambient and storage range","metaTitle":"Siemens 3VA2140-5MN32-0DC0 SENTRON MCCB, 40A, 3-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA2140-5MN32-0DC0 molded case circuit breaker, 40A rated, 3-pole, 121kA breaking capacity at 415V. Motor protection design with undervoltage release. Active produc","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":"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":"3VA9608-0BB25","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=569500&mlfb=3VA2140-5MN32-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0DC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2140-5MN32-0DC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA2140-5MN32-0DC0 at 415 V?","answer":"The breaking capacity at 415 V is 121 kA. At 240 V it is 187 kA, at 500 V it is 75.6 kA, and at 690 V it is 3.7 kA."},{"question":"Does 3VA2140-5MN32-0DC0 include an undervoltage release?","answer":"Yes, it is factory-fitted with an undervoltage release (UVR) and two HQ auxiliary switches."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0DC0","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/3VA2140-5MN32-0DC0 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}}