{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-3ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-3ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-3ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-3ED42-0AA0, 4-pole molded case circuit breaker, 25 A rated at 40 °C, TM210 thermal-magnetic release, breaking capacity 75.6 kA at 240 V.","salesMarkdown":"## Current-production 4-pole MCCB with TM210 release The 3VA1125-3ED42-0AA0: Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, and 11.9 kA at 690 V — figures that cover most low-voltage distribution panels in North American and IEC markets. The 4-pole format handles three-phase plus neutral switching, which matters for panels feeding mixed single-phase and three-phase loads or where the neutral must be disconnected for isolation. ## DIN-rail footprint and thermal derating Measures 70 mm deep by 101.6 mm wide by 130 mm high. The 101.6 mm width (4 inches) is the standard 4-pole MCCB footprint. Thermal derating is minimal up to 50 °C (still 25 A), then drops to 24 A at 55 °C and 23 A at 70 °C. Maximum power loss is 8.5 W, which is modest for a 4-pole 25 A frame but still adds to the enclosure's thermal budget. The storage limits govern shipping and warehousing, not running conditions. Communication function is not built in; no ground-fault monitoring version. An optional motor drive is available as a product extension for remote tripping.","metaTitle":"Siemens 3VA1125-3ED42-0AA0 SENTRON MCCB, 4-Pole, 25 A, TM210","metaDescription":"Siemens SENTRON 3VA1125-3ED42-0AA0 molded case circuit breaker, 4-pole, 25 A rated at 40 °C, TM210 thermal-magnetic release. Breaking capacity 75.6 kA at 240 V. Current production.","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","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]":"4 in","Height [In]":"5.12 in","Number Of Poles":"4","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":"8.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 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","design of the N-conductor protection":"Without","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"Yes","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":"N","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=72615&mlfb=3VA1125-3ED42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-3ED42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of 3VA1125-3ED42-0AA0?","answer":"70 mm (2.76 inches). That's the dimension from the mounting surface to the front of the breaker body, not including any handle projection or accessory depth."},{"question":"Will 3VA1125-3ED42-0AA0 drop into a panel specified around 3VA1020-3ED36-0AA0 without rewiring?","answer":"No. The 3VA1125-3ED42-0AA0 is a 4-pole breaker; the 3VA1020-3ED36-0AA0 is 3-pole. The neutral pole requires an additional conductor and a wider DIN-rail footprint. The panel's bus bars and wiring scheme would need modification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-3ED42-0AA0","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/3VA1125-3ED42-0AA0 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}}