{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3EF32-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3EF32-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3EF32-0AE0, molded case circuit breaker, line protection, 3-pole, TM240 release, 25 A at 40 °C, breaking capacity 75.6 kA at 240 V, 70 mm depth, 76.2 mm width, 130 mm height.","salesMarkdown":"## Thermal Derating and Breaking Capacity — What the Ratings Mean The 3VA1125-3EF32-0AE0: The 25 A rating holds flat from 40 °C through 50 °C, then derates to 24 A at 55–60 °C and 23 A at 65–70 °C. That means a panel running at 55 °C ambient loses 1 A of headroom — plan the load margin accordingly. The breaking capacity curve is the real selection gate: at 240 V the 75.6 kA figure covers most North American secondary distribution; at 415 V the 52.5 kA rating suits European 400 V industrial mains. If your fault current at 440 V exceeds 32 kA, this breaker is undersized for that node. The 3VA1125-3EF32-0AE0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard MCCB footprint that mounts directly on a DIN rail or panel plate. The 3-pole width (76.2 mm) is the same as the 3VA1110 and 3VA1112 siblings, so a panel drilled for a 3VA1110-5ED36-0AC0 accepts this unit without re-drilling or re-bussing. ## Release Configuration and Accessories If you need shunt trip, UVR, or ground-fault add-ons, this base unit does not carry them; you would step to a different 3VA variant.","metaTitle":"Siemens 3VA1125-3EF32-0AE0 SENTRON MCCB, 25 A, 3-Pole, 70 mm","metaDescription":"Siemens SENTRON 3VA1125-3EF32-0AE0 molded case circuit breaker, 25 A rated at 40 °C, 3-pole, 75.6 kA at 240 V. Active production. Quoted to order against RFQ.","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 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]":"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":"8.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11253EF320AA0","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":"N","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=434356&mlfb=3VA1125-3EF32-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3EF32-0AE0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1125-3EF32-0AE0 at 415 V?","answer":"At 415 V the breaking capacity is 52.5 kA, dropping to 32 kA at 440 V and 11.9 kA at 500 V / 690 V."},{"question":"Will 3VA1125-3EF32-0AE0 drop into a panel specified for 3VA1110-5ED36-0AC0?","answer":"Yes — both are 3-pole SENTRON MCCBs with the same 76.2 mm width and 130 mm height, so the panel footprint and bus spacing are identical. The depth is also 70 mm, matching the 3VA1110 series."},{"question":"Where can I buy the 3VA1125-3EF32-0AE0?","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 commercial offer."},{"question":"What is the rated current of 3VA1125-3EF32-0AE0 at 40 °C?","answer":"Rated current is 25 A at 40 °C, holding at 25 A through 50 °C, then derating to 24 A at 55–60 °C and 23 A at 65–70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3EF32-0AE0","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/3VA1125-3EF32-0AE0 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}}