{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-4EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-4EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-4EF32-0BA0, 3-pole molded case circuit breaker, 50 A (40 °C), 121 kA at 240 V, TM240 overcurrent release, undervoltage release, line protection.","salesMarkdown":"The interrupting capacity is the headline number here: 121 kA at 240 V, dropping to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm tall — a standard 3-pole MCCB footprint that fits SENTRON panel-mounting accessories and busbar systems. The 76.2 mm width (3 inches) is the pole spacing; three poles at 25.4 mm each. Max power loss is 17.1 W, which matters for thermal management in enclosed panels — derating starts at 55 °C (49 A) and drops to 45 A at 70 °C. ## What the TM240 trip unit means for coordination The thermal element is non-adjustable; the magnetic pickup is fixed as well. That's a simpler, more robust design than an electronic trip unit — no auxiliary power needed, no adjustment drift over time. But it also means no field-adjustable long-time or short-time pickup. For selectivity studies, the fixed curve is what you have; coordination with downstream breakers depends on the manufacturer's published time-current curves. The 121 kA interrupting at 240 V gives good headroom for high-fault installations, but at 480 V the 75.6 kA rating still covers most industrial services. Mounts in a standard SENTRON distribution panel or enclosure using the manufacturer's mounting plate and busbar system. The 70 mm depth fits flush in most 200 mm deep enclosures. Line and load connections are via screw terminals — torque specs are on the nameplate. The undervoltage release terminals are separate; wire them to a control transformer or UPS if you need the breaker to stay closed on a sag.","metaTitle":"Siemens 3VA1150-4EF32-0BA0 SENTRON MCCB, 50 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1150-4EF32-0BA0 molded case circuit breaker, 3-pole, 50 A rated at 40 °C, 121 kA interrupting at 240 V. Undervoltage release, TM240 trip unit. Current lifecycle.","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":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"17.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11504EF320AA0","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":"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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=265773&mlfb=3VA1150-4EF32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-4EF32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1150-4EF32-0BA0 at 240 V?","answer":"121 kA at 240 V. At 415 V it's 75.6 kA, at 440 V it's 52.5 kA, and at 500 V and 690 V it's 11.9 kA."},{"question":"What does the TM240 trip unit mean?","answer":"TM240 is a fixed thermal-magnetic overcurrent release rated 50 A at 40 °C. The thermal element and magnetic pickup are non-adjustable — no field calibration needed, but also no adjustment range."},{"question":"Where can I buy 3VA1150-4EF32-0BA0 and how is it quoted?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, no stock or lead-time figures here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-4EF32-0BA0","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/3VA1150-4EF32-0BA0 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}}