{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1125-4EE42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1125-4EE42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1125-4EE42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1125-4EE42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1125-4EE42-0AA0, molded case circuit breaker, 4-pole, 25 A, TM220 release, 121 kA at 240 V, 70 mm depth.","salesMarkdown":"At 415 V the rating drops to 76 kA, and at 500 V to 11.9 kA, so the voltage-dependent SCCR must match the point of common coupling. The 25 A rating holds steady up to 50 °C, then derates to 24 A at 55–60 °C and 23 A at 65–70 °C — useful for warm enclosures or summer ambient conditions. The TM220 release is a fixed thermal-magnetic design with an adjustable response current (lg) set at 25 A minimum, meaning the thermal trip threshold is factory-set and non-interchangeable — a consideration if downstream coordination requires a different trip curve. The rated insulation voltage Ui of 690 V covers most 480/277 V and 600 V systems, and the DC rating of 500 V opens the breaker for DC distribution or battery-bank protection. The breaker measures 70 mm deep, 101.6 mm wide, and 130 mm tall — a compact 4-pole footprint that fits standard SENTRON panel cutouts and busbar systems. Front IP40 protection means it is sealed against tools and small objects but not washdown; install in a dry enclosure or behind a panel door. The 8.5 W maximum power loss should be factored into enclosure thermal calculations, especially in dense switchboards.","metaTitle":"Siemens SENTRON 3VM1125-4EE42-0AA0 MCCB, 25 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VM1125-4EE42-0AA0 molded case circuit breaker, 25 A rated, 4-pole, TM220 release. Breaking capacity 121 kA at 240 V. Sourced to order against an 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":"101.6 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"76 kA","at 440 V":"53 kA","at 500 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]":"2.8 in","Width [in]":"4 in","Height [in]":"5.1 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 continuous current Iu":"25 A","Rated insulation voltage Ui":"690 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM220","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","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 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","Number of CO contacts / for auxiliary contacts":"0","Protection Function Of The Overcurrent Release":"LI","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"500 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=575466&mlfb=3VM1125-4EE42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1125-4EE42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VM1125-4EE42-0AA0?","answer":"Submit an RFQ. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VM1125-4EE42-0AA0 at 240 V?","answer":"121 kA at 240 V, dropping to 76 kA at 415 V, 53 kA at 440 V, and 11.9 kA at 500 V."},{"question":"What compliance documentation does this brand provide for 3VM1125-4EE42-0AA0?","answer":"The brand is Siemens SENTRON. Standard documentation includes RoHS, REACH, UL, and IEC compliance declarations available through Siemens support channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1125-4EE42-0AA0","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/3VM1125-4EE42-0AA0 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}}