{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-4ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-4ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-4ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-4ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1040-4ED42-0AA0, molded case circuit breaker, 4-pole, 40 A rated continuous current, 121 kA breaking capacity at 240 V AC, TM210 overcurrent release, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1040-4ED42-0AA0 is a 4-pole molded case circuit breaker rated for 40 A continuous current, with a TM210 thermal-magnetic overcurrent release designed for line protection. Its interrupting capacity reaches 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — figures that govern its fault-clearing capability in low-voltage distribution panels. Rated insulation voltage is 800 V, and the breaker dissipates a maximum 10.8 W under full load — a figure worth checking against your panel's thermal budget if you're packing several units side by side on a DIN rail. Operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C, so it handles typical indoor panel environments without derating concerns at standard ambient conditions. Dimensions are 130 mm height, 101.6 mm width, and 70 mm depth — a 4-pole MCCB footprint that fits standard Siemens SENTRON panel cutouts and busbar systems. If you need those options, you're looking at a different suffix in the 3VA family. The interrupting ratings tell the real story for fault coordination: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That steep drop above 440 V means you need to verify the available fault current at your system voltage — especially on 690 V circuits where the 11.9 kA ceiling may require upstream current-limiting fuses or a higher-rated frame.","metaTitle":"Siemens 3VA1040-4ED42-0AA0 SENTRON MCCB, 40A, 4-Pole, 121kA","metaDescription":"Siemens SENTRON 3VA1040-4ED42-0AA0 molded case circuit breaker, 40A continuous, 4-pole, 121kA breaking capacity at 240V AC. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","title":"3VA1040-4ED42-0AA0","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]":"4 in","Height [In]":"5.12 in","description":"circuit breaker 3VA1 IEC frame 100 breaking capacity class S Icu=36kA @ 415V 4-pole, line protection TM210, FTFM, In=40A overload protection Ir=40A fixed short-circuit protection Ii=10 x In N conductor unprotected nut keeper kit","Trip Indicator":"No","Number Of Poles":"4","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","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM210","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","design of the N-conductor protection":"without","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"100 A","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/986f809c7f7b39f04e85e1600155745e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=167777&mlfb=3VA1040-4ED42-0AA0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1040-4ED42-0AA0 at 240 V?","answer":"121 kA at 240 V AC, with lower ratings at higher voltages: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V."},{"question":"Where can I buy the 3VA1040-4ED42-0AA0 and how is it quoted?","answer":"This active-production part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does this breaker include undervoltage release or ground-fault monitoring?","answer":"No — this variant has no undervoltage release, no communication function, and no ground-fault monitoring. It is a straight line-protection breaker with a TM210 thermal-magnetic release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-4ED42-0AA0","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/3VA1040-4ED42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}