{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF36-0AD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF36-0AD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0AD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0AD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF36-0AD0, molded case circuit breaker, 3-pole, 40 A at 40 °C, TM240 thermal-magnetic release, 121 kA at 240 V AC, 70 mm depth.","salesMarkdown":"The interrupting capacity is what sets this breaker apart: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 70 mm depth and 76.2 mm width (3-inch footprint) fit standard Siemens SENTRON panel mounting patterns — a direct swap into existing 3VA1-series cutouts. The 3-pole design occupies a 76.2 mm width — three standard 25.4 mm pole spaces — so it fits standard Siemens SENTRON distribution boards and panelboards without adapters. It ships with a TM240 thermal-magnetic release, which is non-interchangeable in the field — the trip unit is fixed. If you need adjustable thermal or magnetic settings, look at the 3VA2 series with electronic releases. The auxiliary switch block is configured as 3 auxiliary switches HQ (high-qualified), which can be wired for remote status indication or trip alarm. The temperature derating curve shows full 40 A up to 50 °C, then drops to 39 A at 55 °C and 38 A at 65 °C, so derating is minimal in typical 40 °C switchrooms.","metaTitle":"Siemens 3VA1140-4EF36-0AD0 SENTRON MCCB, 40 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1140-4EF36-0AD0 molded case circuit breaker, 40 A, 3-pole, 121 kA interrupting capacity at 240 V AC. Line protection, TM240 release, 70 mm depth. Sourced to orde","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 kA","at 690 V":"11.9 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":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"10.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11404EF360AA0","Design Of The Auxiliary Switch":"3 auxiliary switches HQ","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","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"S","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=264946&mlfb=3VA1140-4EF36-0AD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0AD0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0AD0","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/3VA1140-4EF36-0AD0 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}}