{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF36-0DC0, molded case circuit breaker, 3-pole, 40 A at 40 °C, 187 kA breaking capacity at 240 V, undervoltage release, 2 auxiliary switches HQ.","salesMarkdown":"At 415 V it still holds 121 kA, dropping to 75.6 kA at 440 V and 17 kA at 500 V and 690 V, so the SCCR you need drives which voltage tap you spec against. Thermal derating is mild: the breaker holds 40 A up to 50 °C ambient, then steps down to 39 A at 55 °C, 38 A at 65 °C, and 37 A at 70 °C. That means in a warm panel — say a packed MCC bucket near other heat sources — you lose only 3 A at the top of the operating range. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm high — a standard 3-pole MCCB footprint that fits most Siemens and third-party distribution blocks without re-drilling. ## Auxiliary hardware and integration The two HQ auxiliary switches provide status feedback (open/closed) to a PLC or panel indicator, one normally open and one normally closed contact set per switch. The base switch is order code 3VA11405EF360AA0, so if you are replacing the internal mechanism on an existing install, that is the sub-assembly number. No trip indicator, no voltage trigger, and no ground-fault monitoring on this version — it is a straight thermal-magnetic line-protection MCCB with undervoltage release.","metaTitle":"Siemens 3VA1140-5EF36-0DC0 SENTRON MCCB, 40 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1140-5EF36-0DC0 molded case circuit breaker, 40 A, 3-pole, 187 kA at 240 V. Undervoltage release, 2 aux switches HQ. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"39 A","at 60 °C":"39 A","at 65 °C":"38 A","at 70 °C":"37 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 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":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"13.3 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11405EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=435479&mlfb=3VA1140-5EF36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1140-5EF36-0DC0 and how is it quoted?","answer":"This part is sourced through independent industrial distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What are the key ratings of 3VA1140-5EF36-0DC0?","answer":"It is a 3-pole MCCB rated 40 A continuous at 40 °C, with a breaking capacity of 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. Insulation voltage is 800 V. Power loss is 13.3 W at full load."},{"question":"What compliance documentation does this brand provide for 3VA1140-5EF36-0DC0?","answer":"As a Siemens SENTRON product, it carries UL, CSA, and IEC certifications standard for the 3VA series. RoHS and REACH declarations are available from Siemens documentation. Specific cert numbers are not listed in this record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF36-0DC0","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/3VA1140-5EF36-0DC0 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}}