{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF36-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF36-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF36-0AH0, Molded case circuit breaker, 3-pole, 40 A rated at 40 °C, 121 kA breaking capacity at 240 VAC, TM240 overcurrent release, line protection design.","salesMarkdown":"The 121 kA interrupting rating at 240 VAC gives it headroom on high-fault utility feeds or transformer secondaries; at 415 VAC it still clears 75.6 kA, and at 690 VAC it holds 11.9 kA. That SCCR range makes it suitable for panel main or feeder duty where fault current is substantial. The housing is sized at 130 mm high × 76.2 mm wide × 70 mm deep — a standard SENTRON 3VA fixed-mount footprint that fits the same panel cutout as other 3VA1140 frame sizes. ## Auxiliary switching and monitoring The auxiliary contacts follow the breaker position (ON/OFF); the trip alarm switch closes only on a fault trip, which gives a separate signal for remote annunciation without needing an external relay. The trip indicator flag on the front confirms whether the breaker opened on overload/short or was manually switched off. At 55 °C it drops to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A.","metaTitle":"Siemens 3VA1140-4EF36-0AH0 SENTRON MCCB, 40 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1140-4EF36-0AH0 molded case circuit breaker, 40 A rated, 3-pole, 121 kA breaking capacity at 240 VAC. 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":"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":"Yes","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":"2 auxiliary switches + 1 trip alarm switch 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":"3VA9988-0AB12","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=255907&mlfb=3VA1140-4EF36-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF36-0AH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1140-4EF36-0AH0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; current pricing and stock are confirmed at quote time."},{"question":"Will 3VA1140-4EF36-0AH0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"Not without checking the frame size. The 3VA1140 is a larger frame than the 3VA1110 — the 1140 carries higher continuous current and breaking capacity. The mounting footprint differs; verify the panel cutout dimensions against the 3VA1140's 130 mm × 76.2 mm × 70 mm envelope before assuming interchangeability."},{"question":"What is the depth of 3VA1140-4EF36-0AH0?","answer":"The depth is 70 mm (2.76 in)."},{"question":"What is the width of 3VA1140-4EF36-0AH0?","answer":"The width is 76.2 mm (3 in)."},{"question":"What compliance documentation does Siemens provide for 3VA1140-4EF36-0AH0?","answer":"Standard SENTRON documentation includes the IEC/UL/CSA certification data on the nameplate and in the product manual. RoHS and REACH declarations are available from Siemens support; the breaker carries CE marking for the European market."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF36-0AH0","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/3VA1140-4EF36-0AH0 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}}