{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EF32-0AE0, 3-pole molded case circuit breaker, 25 A rated current, TM240 thermal-magnetic release, 121 kA interrupting capacity at 240 V AC.","salesMarkdown":"The Siemens SENTRON 3VA1125-4EF32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. The interrupting ratings are the headline here: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a sourcing buyer, that means one less variable to spec; what you see on the nameplate is what you get. The breaker ships with four high-capacity (HQ) auxiliary switches built in, so you get status feedback without adding a separate accessory block. At 55 °C it steps down to 24 A, at 60 °C to 23.5 A, and at 70 °C to 22.5 A. ## What's on the front and what isn't The breaker is a straight thermal-magnetic line-protection device; if you need remote trip, GFCI, or metering, you'd add those externally or step up to a 3VA2 with electronic trip. The auxiliary contact version is listed as \"4 auxiliary switches HQ\" — that's four form-C contacts rated for switching signals back to a PLC or status lamp panel.","metaTitle":"Siemens 3VA1125-4EF32-0AE0 SENTRON MCCB, 25 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-4EF32-0AE0 molded case circuit breaker, 25 A rated, 121 kA interrupting at 240 V. Active production. 3-pole, TM240 release, 4 HQ aux switches. Quoted to ord","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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"23.5 A","at 65 °C":"23 A","at 70 °C":"22.5 A","Trip Indicator":"No","Number Of Poles":"3","Product version":"Line protection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","Phase Failure Detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"4 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11254EF320AA0","Courant permanent assigné Iu":"25 A","Design Of The Auxiliary Release":"without auxiliaryrelease","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"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","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / lg min.":"1","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","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":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"lug terminal","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0 mm"}},"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=880&mlfb=3VA1125-4EF32-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0AE0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1125-4EF32-0AE0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and confirmed availability — no stock count or lead-time number is published here."},{"question":"What is 3VA1125-4EF32-0AE0's interrupting capacity at 240 V?","answer":"The interrupting rating is 121 kA at 240 V AC. It also carries 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0AE0","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/3VA1125-4EF32-0AE0 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}}