{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EE42-0AA0, molded case circuit breaker, 4-pole, 25 A rated current at 40 °C, TM220 trip unit, 121 kA breaking capacity at 240 VAC.","salesMarkdown":"No undervoltage release or communication module is fitted, so this is a straightforward standalone breaker for basic feeder protection. The 3VA1125-4EE42-0AA0 delivers 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, and 11.9 kA at both 500 VAC and 690 VAC. For a site electrical engineer coordinating a panel, the 121 kA figure at 240 V gives headroom for high-fault installations near a large transformer; the 11.9 kA at 690 V is typical for industrial motor circuits at that voltage. The 101.6 mm width (4 inches) is the standard footprint for a 4-pole MCCB in a SENTRON panel — it fits the same busbar and mounting pattern as other 4-pole 3VA frames.","metaTitle":"Siemens 3VA1125-4EE42-0AA0 SENTRON MCCB, 25 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1125-4EE42-0AA0 molded case circuit breaker, 25 A rated, 4-pole, 121 kA breaking capacity at 240 VAC. 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","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":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"24 A","at 65 °C":"23 A","at 70 °C":"23 A","Depth [In]":"2.76 in","Width [In]":"4 in","Height [In]":"5.12 in","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":"8.5 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":"TM220","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","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":"https://cdn.aoctrl.com/4eb0ff4775af2480a029600f66eb93df.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1875&mlfb=3VA1125-4EE42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EE42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1125-4EE42-0AA0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1125-4EE42-0AA0's listed depth (70 mm) on this component line?","answer":"The depth is 70 mm, which is the dimension from the mounting surface to the front of the breaker — standard for the 3VA frame."},{"question":"What is 3VA1125-4EE42-0AA0's listed width (101.6 mm) on this component line?","answer":"The width is 101.6 mm, or 4 inches — the standard footprint for a 4-pole MCCB in the SENTRON panel system."},{"question":"What compliance documentation does this brand provide for 3VA1125-4EE42-0AA0 (RoHS, REACH, UL, IEC)?","answer":"As a Siemens SENTRON MCCB, it is designed to meet IEC 60947-2 and UL 489 standards. RoHS and REACH declarations are available from Siemens on request. The IP40 front protection and 800 V rated insulation voltage are part of the IEC compliance package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EE42-0AA0","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/3VA1125-4EE42-0AA0 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}}