{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1140-5EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1140-5EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1, molded case circuit breaker, 3VA1140-5EF32-0BA0, 40 A, 3-pole, 187 kA breaking capacity at 240 VAC, line protection, with undervoltage release.","salesMarkdown":"## MCCB for line protection — 40 A, 3-pole, with undervoltage release This MCCB carries a 187 kA interrupting rating at 240 VAC — that is its highest published breaking capacity, typical for a high-interrupting 3VA1 frame at low voltage. At 415 VAC it is rated 121 kA; at 440 VAC, 75.6 kA; at 500 V and 690 VAC, 17 kA. ## Thermal-magnetic trip — TM240, no communication, no ground-fault That means the thermal element handles overloads (inverse time) and the magnetic element handles short circuits (instantaneous). The power loss is 13.3 W maximum, which matters for thermal management inside a sealed enclosure. Ambient temperature derating starts above 55 °C: at 55 °C the rating drops to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. Below 55 °C the breaker is rated a full 40 A. It is a 3-pole MCCB designed for DIN-rail or direct-panel mounting in a distribution board or motor control center. The 76.2 mm width (3 inches) is standard for a 3-pole SENTRON 3VA1 frame, so it occupies a predictable footprint in a multi-breaker lineup. No auxiliary contacts or shunt trip are included on this order code — only the undervoltage release.","metaTitle":"Siemens 3VA1140-5EF32-0BA0 SENTRON MCCB, 40 A, 3-Pole, 187 k","metaDescription":"Siemens 3VA1140-5EF32-0BA0 SENTRON molded case circuit breaker, 40 A rated, 3-pole, 187 kA breaking capacity at 240 VAC. Undervoltage release included. Current production. Sourced","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":"3VA9608-0BB11","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":"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=64323&mlfb=3VA1140-5EF32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1140-5EF32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1140-5EF32-0BA0 at 480 V?","answer":"At 500 VAC the breaking capacity is 17 kA, and at 690 VAC it is also 17 kA. For 480 V systems, use the 500 V rating as the conservative value — 17 kA."},{"question":"Where can I buy 3VA1140-5EF32-0BA0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"Does 3VA1140-5EF32-0BA0 include an undervoltage release?","answer":"Yes, this order code includes an undervoltage release (UVR) as the auxiliary release. The base variant 3VA11405EF320AA0 does not include it."},{"question":"What is the ambient temperature derating for this breaker?","answer":"Rated 40 A from 40 °C to 50 °C. At 55 °C it derates to 39 A, at 65 °C to 38 A, and at 70 °C to 37 A. Above 70 °C is outside the operating range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1140-5EF32-0BA0","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/3VA1140-5EF32-0BA0 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}}