{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-4EF32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-4EF32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-4EF32-0BH0, molded case circuit breaker, 3-pole, 40 A rated current at 40 °C, 121 kA breaking capacity at 240 V AC, line protection, undervoltage release, 70 mm depth.","salesMarkdown":"## What this MCCB delivers Breaking capacity hits 121 kA at 240 V AC and 75.6 kA at 415 V AC — enough headroom for high-fault utility feeds or transformer secondaries without cascading upstream breakers. At 690 V it still interrupts 11.9 kA, covering most industrial motor circuits. Auxiliary contacts include two auxiliary switches plus one trip-alarm switch (HQ), giving the panel builder feedback on breaker position and fault state without adding external relays. Trip indicator confirms the breaker opened on overload or short circuit, not manual operation. The derating table above 55 °C (39 A at 55 °C, 38 A at 65 °C) is the real-world limit; don't size the breaker at 40 A if the panel ambient exceeds 50 °C.","metaTitle":"Siemens 3VA1140-4EF32-0BH0 SENTRON MCCB, 40 A, 121 kA at 240","metaDescription":"Siemens 3VA1140-4EF32-0BH0 SENTRON molded case circuit breaker, 3-pole, 40 A rated at 40 °C, 121 kA breaking capacity at 240 V AC. Active production. Available to order — request q","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":"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":"3VA11404EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3VA9608-0BB11","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":"nut keeper kit on both ends","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=462224&mlfb=3VA1140-4EF32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-4EF32-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1140-4EF32-0BH0 and how do I get a price?","answer":"The 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 3VA1140-4EF32-0BH0's listed depth?","answer":"The body depth is 70 mm (2.76 in). Allow additional clearance behind the panel for the undervoltage release and auxiliary switch wiring."},{"question":"What is 3VA1140-4EF32-0BH0's rated breaking capacity at 240 V?","answer":"At 240 V AC the breaking capacity is 121 kA. At 415 V AC it is 75.6 kA, and at 690 V AC it is 11.9 kA."},{"question":"Does 3VA1140-4EF32-0BH0 include an undervoltage release?","answer":"Yes, it is equipped with an undervoltage release (UVR) that trips the breaker when line voltage drops below the release threshold. The auxiliary switch configuration is two auxiliary switches plus one trip-alarm switch (HQ)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-4EF32-0BH0","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/3VA1140-4EF32-0BH0 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}}