{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF32-0CA0, molded case circuit breaker, 3-pole, 40 A at 40 °C, 187 kA at 240 V, undervoltage release (UVR) fitted.","salesMarkdown":"The Siemens SENTRON 3VA1140-5EF32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated 40 A continuous at 40 °C ambient, with a thermal-magnetic overcurrent release type TM240. Breaking capacity reaches 187 kA at 240 V AC, derating to 121 kA at 415 V and 75.6 kA at 440 V — sufficient for high-fault utility feeds or transformer secondaries where upstream coordination demands full-rated interruption. At 240 V the 187 kA interrupting rating places this MCCB well above typical panelboard SCCR requirements — it clears faults that would weld a standard 25 kA or 65 kA breaker closed. The 121 kA at 415 V and 75.6 kA at 440 V still cover most industrial 400 V distribution. Rated 40 A from 40 °C through 50 °C ambient; at 55 °C it derates to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. Maximum power loss is 13.3 W — relevant for enclosure heat rise calculations when grouping multiple breakers. Dimensions: 130 mm height, 76.2 mm width (3 inches), 70 mm depth — fits standard Siemens 3VA panel mounting footprints.","metaTitle":"Siemens 3VA1140-5EF32-0CA0 SENTRON MCCB, 40 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1140-5EF32-0CA0 molded case circuit breaker, 40 A rated at 40 °C, 3-pole, 187 kA breaking capacity at 240 V. Undervoltage release included. Current production. S","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":"3VA11405EF320AA0","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":"3VA9608-0BB24","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":"0","Switching Capacity Class Of The Circuit Breaker":"M","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=280362&mlfb=3VA1140-5EF32-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0CA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1140-5EF32-0CA0 at different voltages?","answer":"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."},{"question":"Does 3VA1140-5EF32-0CA0 include an undervoltage release?","answer":"Yes, it is factory-fitted with an undervoltage release (UVR) of type design 'undervoltage release (UVR)'."},{"question":"What are the physical dimensions of this MCCB?","answer":"Height 130 mm, width 76.2 mm (3 inches), depth 70 mm."},{"question":"How do I get current pricing and availability for 3VA1140-5EF32-0CA0?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time against independent distribution channels."},{"question":"Will 3VA1140-5EF32-0CA0 drop into a panel specified around 3VA1110-5EF32-0LA0 without rewiring?","answer":"Both are 3-pole SENTRON 3VA frame breakers sharing the same mounting footprint and terminal layout, so mechanical fit and bus connections are identical. The difference is the current rating and release type — the 3VA1140-5EF32-0CA0 carries a 40 A TM240 release versus the 3VA1110 variant's lower rating. No rewiring needed if the bus and lug sizes match the 40 A rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0CA0","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/3VA1140-5EF32-0CA0 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}}