{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5ED12-0AA0, molded case circuit breaker, 1-pole, 25 A (40 °C), TM210 thermal-magnetic release, 121 kA at 240 V, 9 kA at 415 V, IP40 front, 70 mm depth.","salesMarkdown":"## Line protection breaker with high interrupting capacity Its TM210 thermal-magnetic release provides LI protection — fixed instantaneous trip at 320 A and thermal overload curve centered on the 25 A continuous rating at 40 °C. The interrupting capacity tells the story: 121 kA at 240 V AC handles high-fault utility feeds or transformer secondaries, while the 9 kA at 415 V AC covers most European industrial distribution. ## DIN-rail footprint and thermal derating At 25.4 mm wide (1 inch) and 70 mm deep, this single-pole MCCB snaps onto standard DIN rail and leaves room for adjacent breakers in a multi-pole group. The 130 mm height fits within a typical 200 mm enclosure depth with wiring clearance. Thermal derating is mild: the 25 A rating holds through 50 °C, then steps to 24 A at 55–60 °C and 23 A at 65–70 °C. For a panel running warm near a drive or transformer, that derating curve means you can still load it to 23 A without nuisance tripping.","metaTitle":"Siemens 3VA1125-5ED12-0AA0 SENTRON MCCB, 25 A, 1-Pole, 121 k","metaDescription":"Siemens 3VA1125-5ED12-0AA0 SENTRON molded case circuit breaker, 25 A, 1-pole, TM210 release. Interrupting capacity 121 kA at 240 V. Active production, available to order. Request R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"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]":"1 in","Height [In]":"5.12 in","Number Of Poles":"1","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"2.83 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"500 V","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","Design Of The Overcurrent Release":"TM210","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":"125 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching 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","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 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cb4418a07086394c66d9e98dcb166573.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=694638&mlfb=3VA1125-5ED12-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5ED12-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5ED12-0AA0 and how do I get a price?","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 price and lead time."},{"question":"What is the interrupting capacity of 3VA1125-5ED12-0AA0 at 240 V and 415 V?","answer":"The interrupting capacity is 121 kA at 240 V AC and 9 kA at 415 V AC. The 121 kA figure is unusually high for a 1-pole 25 A MCCB — it handles high-fault utility feeds without upstream fuses."},{"question":"What compliance documentation does this brand provide for 3VA1125-5ED12-0AA0?","answer":"As a Siemens SENTRON MCCB, this part is designed to meet IEC 60947-2 and UL 489 standards. Compliance documentation including RoHS and REACH declarations is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5ED12-0AA0","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/3VA1125-5ED12-0AA0 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}}