{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1125-3ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1125-3ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1125-3ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1125-3ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VM1125-3ED42-0AA0, 4-pole, 25 A (40 °C), TM210 release, 76 kA at 240 V AC, 70 x 101.6 x 130 mm.","salesMarkdown":"Four poles cover three-phase-plus-neutral or dual-fed configurations. That continuous rating holds flat through 50 °C, then derates to 24 A at 55 °C and 23 A at 70 °C (–). Interrupting capacity is the headline number here: 76 kA at 240 V AC, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V. At 415 V, the 53 kA still covers most industrial motor-control center (MCC) applications. The 12 kA at 500 V is the floor; verify against your utility's worst-case fault study. ## Footprint and panel integration That 101.6 mm (4-inch) width for a 4-pole MCCB is compact — fits standard 4-inch gutter space in a 600 mm wide enclosure. Depth at 70 mm leaves room for rear bus connections without crowding the backplane. Verify the mounting base accepts the standard SENTRON plug-in or fixed lugs before panel layout. ## Thermal performance across temperature The breaker carries a maximum power loss of 9 W at rated load. The derating curve above 50 °C is gradual — only 1 A drop per 5 °C step — so it's usable in moderately warm enclosures without oversizing. No trip indicator means you won't get a visual flag on the handle; rely on the position indicator only.","metaTitle":"Siemens 3VM1125-3ED42-0AA0 SENTRON MCCB, 4P, 25A, 76kA/240V","metaDescription":"Siemens SENTRON 3VM1125-3ED42-0AA0 molded case circuit breaker, 4 poles, 25 A rated at 40 °C, 76 kA interrupting at 240 V AC. Current lifecycle. Quoted on request.","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","title":"3VM1125-3ED42-0AA0","Height":"130 mm","at 240 V":"76 kA","at 415 V":"53 kA","at 440 V":"32 kA","at 500 V":"12 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","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class N Icu=25kA @ 415V 4-pole, line protection TM210, FTFM, In=25A overload protection Ir=25A, not adjustable short-circuit protection Ii=12.8 x In N conductor unprotected nut keeper kit","Trip Indicator":"No","Number Of Poles":"4","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","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"9 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Ground-Fault Monitoring Version":"Without","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","design of the N-conductor protection":"Without","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"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 voltage Ue with AC 50/60Hz":"500 V","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","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 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=575458&mlfb=3VM1125-3ED42-0AA0"},"ai":{"faq":[{"question":"Where can I buy 3VM1125-3ED42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for your target quantity."},{"question":"What are the key interrupting ratings for 3VM1125-3ED42-0AA0?","answer":"76 kA at 240 V AC, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V (–). The 240 V rating is the highest; the 500 V rating is the floor."},{"question":"Will 3VM1125-3ED42-0AA0 drop into a panel designed for 3VA1010-2ED32-0AD0?","answer":"The 3VM1125 is a different platform than the 3VA series. While both are SENTRON MCCBs, the 3VM is a fixed-thermal design (TM210 release) versus the 3VA's adjustable electronic or thermal-magnetic options. Footprint dimensions differ — the 3VM1125 is 70 mm deep, 101.6 mm wide, 130 mm high (–). Verify bus bar spacing and mounting hole pattern before assuming a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1125-3ED42-0AA0","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/3VM1125-3ED42-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}