{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1040-3ED36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1040-3ED36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1040-3ED36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1040-3ED36-0DC0, molded case circuit breaker, 3-pole, 40 A rated current, interrupting capacity 75.6 kA at 240 V, line protection design, undervoltage release, 2 auxiliary switches HQ.","salesMarkdown":"The Siemens SENTRON 3VA1040-3ED36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current across the 40 °C to 50 °C ambient band, with a slight derating curve starting at 55 °C (38.4 A) down to 36 A at 70 °C. The interrupting capacity tells you where this breaker can safely clear a fault: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. The drop at higher voltages is typical for a compact MCCB frame; if your system runs at 690 V, verify the 7.5 kA SCCR is adequate for your upstream transformer. ## Built-in auxiliary and undervoltage release This variant ships with two auxiliary switches (HQ type) and an undervoltage release (UVR) factory-installed. The two auxiliary switches provide status feedback (open/closed/tripped) to a PLC or indication lamp. No ground-fault monitoring is included on this version. The 76.2 mm width (3 inches) is a standard 3-pole MCCB footprint — it occupies three 25.4 mm module positions on a DIN rail. ## Environmental limits The storage limits exceed the operating range, which governs handling and warehousing, not running conditions.","metaTitle":"Siemens 3VA1040-3ED36-0DC0 SENTRON MCCB, 40A, 3-Pole, 75.6kA","metaDescription":"Siemens SENTRON 3VA1040-3ED36-0DC0 molded case circuit breaker, 40A rated, 3-pole, interrupting capacity 75.6kA at 240V. Active production. Sourced to order against RFQ.","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"7.5 kA","at 690 V":"7.5 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"38.4 A","at 60 °C":"37.6 A","at 65 °C":"36.8 A","at 70 °C":"36 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":"3VA10403ED360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","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":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=208645&mlfb=3VA1040-3ED36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1040-3ED36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1040-3ED36-0DC0 and what is the lead time?","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 lead time and price."},{"question":"What is the interrupting capacity of 3VA1040-3ED36-0DC0 at 240 V?","answer":"75.6 kA at 240 V, with lower ratings at higher voltages: 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V."},{"question":"What is the rated current of 3VA1040-3ED36-0DC0 and how does it derate with temperature?","answer":"Rated 40 A continuous from 40 °C to 50 °C ambient. It derates to 38.4 A at 55 °C, 37.6 A at 60 °C, 36.8 A at 65 °C, and 36 A at 70 °C."},{"question":"Does 3VA1040-3ED36-0DC0 include an undervoltage release and auxiliary switches?","answer":"Yes, it ships with an undervoltage release (UVR) and two auxiliary switches (HQ type) factory-installed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1040-3ED36-0DC0","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/3VA1040-3ED36-0DC0 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}}