{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-5EF36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-5EF36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-5EF36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-5EF36-0AA0, 3-pole molded case circuit breaker, 50 A rated current, TM240 thermal-magnetic release, 187 kA interrupting capacity at 240 V.","salesMarkdown":"## 50 A MCCB with 187 kA interrupting — thermal curve matters more than the headline number What sets this part apart in the 3VA line is the interrupting capacity: 187 kA at 240 V, dropping to 121 kA at 415 V and 75.6 kA at 440 V. That's serious fault-clearing headroom for a 50 A frame — you're not going to run out of SCCR on a 240 V distribution board with this thing. But the real selection gate is the thermal derating curve. This breaker holds 50 A flat from 40 °C through 50 °C ambient, then starts to taper: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. Size your load or the ventilation accordingly. ## Panel fit and integration — 70 mm deep, 3-pole, IP40 front The 3-pole construction handles three-phase loads. ## Coordination and selectivity — the interrupting curve matters downstream The TM240 release provides a fixed thermal curve and magnetic pickup — no interchangeable trip units, so what you see is what you get. For selectivity studies, the published let-through curves (available in the Siemens 3VA manual) are needed to coordinate with downstream breakers.","metaTitle":"Siemens SENTRON 3VA1150-5EF36-0AA0 MCCB, 50A, 3-Pole, 187kA@","metaDescription":"Siemens SENTRON 3VA1150-5EF36-0AA0 molded case circuit breaker, 50A rated at 40-70°C, 3-pole, TM240 release, 187kA interrupting at 240V. Current lifecycle. Sourced to order. RFQ fo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"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","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":"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":"box terminal on both sides","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$120.65","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fac3b991c22f6067027c921d27455901.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=278731&mlfb=3VA1150-5EF36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-5EF36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-5EF36-0AA0 and how is it quoted?","answer":"This MCCB is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm availability and current pricing for your volume."},{"question":"Will 3VA1150-5EF36-0AA0 drop into a panel designed for 3VA1110-5ED32-0AA0?","answer":"Both are 3-pole SENTRON MCCBs in the same physical frame family, so the mounting footprint and bus-bar spacing are identical. The difference is in the release — the 3VA1150 carries a TM240 (50 A) versus the 3VA1110's lower rating — and the interrupting capacity may differ. No rewiring needed if the bus bars and lug sizes match."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a SENTRON series MCCB, it carries the standard Siemens declarations: RoHS and REACH compliance, along with IEC/UL certifications typical for the 3VA family. Specific certificate numbers are on the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-5EF36-0AA0","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/3VA1150-5EF36-0AA0 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}}