{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN36-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN36-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN36-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN36-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2140-5MN36-0AB0, molded case circuit breaker, 3-pole, 40 A, motor protection design, 187 kA at 240 V, 121 kA at 415 V, 105 x 181 x 86 mm.","salesMarkdown":"## Siemens SENTRON 3VA2140-5MN36-0AB0 — 40 A MCCB for Motor Protection ## Motor Protection and Phase Failure Detection This MCCB is built for motor protection duty, with integrated phase failure detection. That means it will trip if one phase drops out — a common failure mode that can single-phase a motor and burn it out if the overload relay doesn't catch it fast enough. The design eliminates the need for a separate phase-failure relay in the motor branch circuit, saving a DIN-rail slot and a wiring step. The basic switch is order code 3VA21405MN360AA0, and the auxiliary switch configuration is two HP-style aux switches, which can be wired for remote status indication or interlocking. The interrupting ratings are given at five voltage levels: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V (–). The sharp drop at 690 V is typical for a 40 A frame — the arc energy at that voltage exceeds what the compact arc chutes can extinguish at high current. For a 400 V distribution system, the 121 kA rating covers most industrial transformer sizes up to about 2.5 MVA. The minimum trip time is 4 s, maximum 17 s, which is a thermal-magnetic or electronic trip curve suited for motor starting inrush without nuisance tripping. No undervoltage release, no voltage trip, no communication module, and no ground-fault monitoring are built in; if those functions are needed, they must be added via external accessories or a different variant.","metaTitle":"Siemens 3VA2140-5MN36-0AB0 SENTRON MCCB, 40 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA2140-5MN36-0AB0 molded case circuit breaker. 40 A continuous, 3-pole motor protection with phase failure detection. Breaking capacity 187 kA at 240 V. Active pro","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":"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":"3VA21405MN360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HP","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","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":"3VA9988-0AA11","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"double-sided box terminal","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=1109174&mlfb=3VA2140-5MN36-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN36-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2140-5MN36-0AB0 at 415 V?","answer":"The interrupting rating is 121 kA at 415 V. At 240 V it is 187 kA, at 440 V it is 121 kA, at 500 V it is 75.6 kA, and at 690 V it is 3.7 kA."},{"question":"Where can I buy 3VA2140-5MN36-0AB0 and get current pricing?","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":"Does 3VA2140-5MN36-0AB0 have phase failure protection?","answer":"Yes, phase failure detection is included. The breaker will trip on loss of a phase, protecting the motor from single-phasing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN36-0AB0","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/3VA2140-5MN36-0AB0 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}}