{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF46-0AA0, 4-pole molded case circuit breaker, 25 A rated current, TM240 thermal-magnetic overcurrent release, interrupting capacity 187 kA at 240 V AC.","salesMarkdown":"The Siemens 3VA1125-5EF46-0AA0 is a SENTRON 4-pole molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, using a TM240 thermal-magnetic overcurrent release. It's built for line protection in distribution panels where you need high interrupting capacity across multiple voltage levels — 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 500 V and 690 V. 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. The TM240 trip unit is thermal-magnetic: the thermal element handles overloads (slow response, I²t curve), the magnetic element handles short-circuit instantaneous trip. The 4-pole width (101.6 mm) is standard for a 4-pole MCCB in this class — it occupies four 25 mm module positions on a DIN rail or mounting plate. Verify the busbar system and phase spacing in your existing panel; if the previous breaker was a 3-pole unit, you'll need the fourth pole's clearance and connection.","metaTitle":"Siemens 3VA1125-5EF46-0AA0 SENTRON MCCB, 25A, 4-Pole, TM240","metaDescription":"Siemens 3VA1125-5EF46-0AA0 SENTRON 4-pole MCCB, 25 A continuous, TM240 thermal-magnetic trip. Interrupting 187 kA at 240 V, 121 kA at 415 V. Active production. Sourced to order.","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":"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","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":"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","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.":"160 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":"box terminal on both sides","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6c11c2ba0d7c39269fed818e03d41a4c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=265177&mlfb=3VA1125-5EF46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF46-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of this MCCB at 415 V?","answer":"At 415 V AC the interrupting rating is 121 kA. It also carries 187 kA at 240 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V."},{"question":"What does the TM240 trip designation mean?","answer":"TM240 refers to the thermal-magnetic overcurrent release. The '240' indicates the frame size or trip curve family — it's a fixed thermal-magnetic unit, not an electronic trip."},{"question":"Will 3VA1125-5EF46-0AA0 drop into a panel specified around 3VA1020-3ED36-0AA0?","answer":"Both are 4-pole SENTRON 3VA breakers sharing the same frame dimensions (70 mm deep, 101.6 mm wide, 130 mm high), so mechanical fit is identical. The key difference: this unit is rated 25 A with a TM240 trip, while the 3VA1020-3ED36-0AA0 is a 20 A unit with a different trip characteristic. Verify the load current and selectivity study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF46-0AA0","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/3VA1125-5EF46-0AA0 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}}