{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-4EF36-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-4EF36-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-4EF36-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF36-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-4EF36-0AE0 molded case circuit breaker, 3-pole, 50 A rated current, TM240 thermal-magnetic release, 121 kA breaking capacity at 240 V AC, line protection design.","salesMarkdown":"The SENTRON 3VA1150-4EF36-0AE0 is a 3-pole molded case circuit breaker rated for 50 A continuous current at 40 °C ambient, with a TM240 thermal-magnetic trip unit. That 50 A holds flat through 50 °C, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C — so if the panel runs hot, you still have headroom down to 45 A before the breaker nuisance-trips. The breaking capacity is 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 121 kA at 240 V tells you it can interrupt a bolted fault on a large transformer secondary without welding its contacts shut — the kind of fault current you see on a 1500 kVA pad-mount feeding a 480/277 V panel. The TM240 release means the thermal element tracks overloads on a 50 A frame, while the magnetic instantaneous trips at roughly 10× the rated current — so 500 A or so. That's a standard motor-starting profile, but verify your inrush against the magnetic pickup curve if you're feeding a high-efficiency motor with locked-rotor current near 8× FLA. It's a straight thermal-magnetic breaker for feeder or branch protection. The 14.6 W maximum power loss matters for panel thermal calculations: if you pack six of these in a row, that's nearly 90 W of heat inside the enclosure that the ventilation has to clear. The 3VA1150-4EF36-0AE0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall. That 76.2 mm width is exactly 3 inches — standard for a 3-pole 50 A frame MCCB in a Siemens panelboard or a separate enclosure. Mounting is via the standard 3VA screw-clamp or plug-in base; no DIN-rail adapter for this frame size — it bolts to the panel or clips into the SENTRON distribution block. The 3VA1110-5ED36-0AC0 is a 3-pole 100 A frame with an electronic ETU release, compared to this 50 A thermal-magnetic TM240. The 3VA1110 is physically larger — 90 mm wide versus 76.2 mm — so it will not drop into the same panel cutout or bus-bar spacing without re-drilling the mounting holes. The breaking capacities also differ: the 100 A frame typically carries lower interrupting ratings at the same voltage because the higher continuous rating stresses the arc chamber. If your BOM calls for a 50 A line-protection breaker, the 3VA1150-4EF36-0AE0 is the correct fit; the 3VA1110-5ED36-0AC0 would require re-wiring the bus and re-coordinating the downstream devices.","metaTitle":"SENTRON 3VA1150-4EF36-0AE0 MCCB, 50 A, 121 kA at 240 V","metaDescription":"SENTRON 3VA1150-4EF36-0AE0 molded case circuit breaker, 3-pole, 50 A, TM240 release, 121 kA at 240 V. Current lifecycle. Sourced to order. Request a quote.","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":"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":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"49 A","at 60 °C":"48 A","at 65 °C":"46 A","at 70 °C":"45 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":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11504EF360AA0","Design Of The Auxiliary Switch":"4 auxiliary switches HQ","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","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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"S","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=380104&mlfb=3VA1150-4EF36-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF36-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-4EF36-0AE0 and what is the lead time?","answer":"This part is sourced and quoted 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 estimate."},{"question":"Will 3VA1150-4EF36-0AE0 drop into a panel specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"No — the 3VA1150 is 76.2 mm wide versus the 3VA1110's 90 mm frame, so the mounting holes and bus-bar spacing differ. A direct swap would require re-drilling the panel and re-terminating the bus connections."},{"question":"What is the breaking capacity of 3VA1150-4EF36-0AE0 at 415 V?","answer":"The breaking capacity is 75.6 kA at 415 V AC, which is typical for a 50 A frame MCCB on a 400 V industrial distribution system with a large transformer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-4EF36-0AE0","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/3VA1150-4EF36-0AE0 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}}