{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1140-5EF32-0CH0, molded case circuit breaker, 3-pole, 40 A, 187 kA at 240 V, line protection, with undervoltage release.","salesMarkdown":"It's a 3-pole unit rated 40 A continuous at 40 °C, with an interrupting capacity of 187 kA at 240 VAC — that's a serious fault-current rating, sized for high-available-fault panels where a standard 25 kA or 65 kA breaker would weld shut on a bolted fault. The 40 A frame is non-ambient-compensated up to 50 °C — it holds full rating at 40, 45, and 50 °C, then derates to 39 A at 55 °C and 37 A at 70 °C (–). The interrupting curve drops steeply with voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500/690 V (–). For a 480 V delta system you're looking at the 75.6 kA figure — still substantial, but verify against your transformer impedance and available fault current study. That's a standard 3-pole MCCB width for a 160 A frame — it'll bolt into a SENTRON panelboard or a DIN-rail adapter plate. The UVR means if control voltage drops below dropout, the breaker opens — common for emergency-stop chains or undervoltage protection on machine tools. That's the heat the breaker dumps into the enclosure — for a multi-breaker panel, sum those losses and size your ventilation or cooling accordingly. The basic switch assembly is order code 3VA11405EF320AA0 — that's the internal mechanism; not a field-replaceable item for most shops, but good to know for spares planning.","metaTitle":"Siemens 3VA1140-5EF32-0CH0 SENTRON MCCB, 40A, 3-Pole, 187kA","metaDescription":"Siemens SENTRON 3VA1140-5EF32-0CH0 molded case circuit breaker, 40A rated, 3-pole, 187kA interrupting at 240VAC. Active production. Undervoltage release. Sourced to order against R","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":"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":"3VA11405EF320AA0","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":"3VA9608-0BB24","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=319828&mlfb=3VA1140-5EF32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0CH0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0CH0","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/3VA1140-5EF32-0CH0 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}}