{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5GE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5GE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5GE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA1125-5GE42-0AA0 molded case circuit breaker, 4-pole, 25 A, TM220 thermal-magnetic release, 187 kA at 240 V.","salesMarkdown":"The interrupting capacity hits 187 kA at 240 V AC, 121 kA at 415 V, and 75.6 kA at 440 V, so it handles high-fault utility feeds and transformer secondaries without cascading upstream. The 4-pole design makes it the right fit for three-phase-plus-neutral distribution or dual-fed transfer schemes where you need to break all live conductors. Full 25 A rating holds through 50 °C ambient; at 55 °C it derates to 24 A, and at 70 °C it's still good for 23 A.","metaTitle":"SENTRON 3VA1125-5GE42-0AA0 MCCB, 25 A, 4-Pole, 187 kA at 240","metaDescription":"SENTRON 3VA1125-5GE42-0AA0 molded case circuit breaker, 25 A, 4-pole, TM220 release, 187 kA at 240 V. Current lifecycle. 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":"25 A","Minimum":"25 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":"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":"100%","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":"M","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/8dcf2cec0fe6ea092fd308429b93c555.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=260249&mlfb=3VA1125-5GE42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5GE42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1125-5GE42-0AA0 at 415 V?","answer":"121 kA at 415 V AC, which covers most industrial secondary-distribution fault levels."},{"question":"Where can I buy 3VA1125-5GE42-0AA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and pricing confirmed at quote time."},{"question":"What does the TM220 release mean on this MCCB?","answer":"TM220 is a fixed thermal-magnetic overcurrent release — no adjustable trip dial, so the 25 A rating is the only setting. The thermal element protects against sustained overloads; the magnetic element handles short-circuit instantaneously."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5GE42-0AA0","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/3VA1125-5GE42-0AA0 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}}