{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1125-3ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1125-3ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1125-3ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1125-3ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1125-3ED12-0AA0, 1-pole molded case circuit breaker, 25 A rated current, TM210 release, 53 kA at 240 V, 70 mm depth.","salesMarkdown":"Rated at 25 A continuous (Iu) across the 40 °C to 50 °C band, it derates to 23 A at 70 °C. The interrupting capacity hits 53 kA at 240 V AC and 7.5 kA at 415 V AC — that 53 kA figure means it can clear a high-fault bolted short on a 240 V line without the arc flashing upstream to the main breaker. That's the spec that decides whether this breaker holds coordination in a panel with a 65 kA-rated main. At 25.4 mm wide (1 inch) and 70 mm deep, it takes one pole position in a panel — that's another SKU that fits the same bin footprint as other 1-pole SENTRON MCCBs. The TM210 release is fixed thermal (25 A) with a magnetic short-circuit pickup adjustable from 320 A (li min) to 320 A (li max) — essentially a fixed magnetic threshold at 320 A, so don't expect to dial the instantaneous trip down for a sensitive load. At 415 V the interrupting capacity drops to 7.5 kA, which is typical for a 1-pole MCCB at line-to-line voltage; verify your point-of-fault current doesn't exceed that. The 25 A continuous rating holds steady up to 50 °C, then derates linearly to 23 A at 70 °C — so in a hot panel near the top of a cabinet, you lose 2 A of headroom. The TM210 release means thermal overload protection is fixed at 25 A; no field adjustment on the thermal element. The magnetic trip is set at 320 A (li), which is about 12.8x In — that's a high instantaneous pickup, typical for motor-starting or transformer inrush where you don't want nuisance trips on the magnetizing current.","metaTitle":"Siemens 3VM1125-3ED12-0AA0 SENTRON MCCB, 1-pole 25 A, 53 kA","metaDescription":"Siemens SENTRON 3VM1125-3ED12-0AA0 molded case circuit breaker, 1-pole, 25 A, TM210 release, 53 kA at 240 V. Current lifecycle. Quoted to order against RFQ.","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":"53 kA","at 415 V":"7.5 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]":"2.8 in","Width [In]":"1 in","Height [In]":"5.1 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":"2.8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"500 V","Design Of The Overcurrent Release":"TM210","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available 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 / lg min.":"25 A","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","Max. rated operational voltage Ue with AC 50/60Hz":"415 V","Mechanical Service Life (Switching Cycles) / Typical":"12 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6,5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/890a9c4e8f724baae13c5de28442f149.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575043&mlfb=3VM1125-3ED12-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1125-3ED12-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VM1125-3ED12-0AA0 and how is it quoted?","answer":"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 breaker at 240 V?","answer":"53 kA at 240 V AC — that's the SCCR at that voltage, meaning it can safely interrupt a fault up to that level without cascading upstream."},{"question":"What is the depth of 3VM1125-3ED12-0AA0?","answer":"70 mm (2.8 inches) deep, which fits standard DIN-rail panel layouts."},{"question":"Does this breaker have an adjustable thermal trip?","answer":"No. The TM210 release has a fixed thermal element at 25 A. Only the magnetic short-circuit pickup is adjustable, and on this variant it's set at a fixed 320 A (li min = li max)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1125-3ED12-0AA0","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/3VM1125-3ED12-0AA0 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}}