{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0DA0, 3-pole molded case circuit breaker, 25 A rated current, 187 kA breaking capacity at 240 V, TM240 thermal-magnetic release, undervoltage release, line protection design.","salesMarkdown":"## Breaking capacity — what it means for panel coordination At 415 V the 121 kA still covers most industrial main switchboards. ## Thermal-magnetic release and derating curve TM240 release means the thermal element is calibrated for a 25 A continuous load at 40 °C ambient. The current rating holds flat at 25 A from 40 °C to 50 °C, then drops to 24 A at 55–60 °C, and 23 A at 65–70 °C. ## Undervoltage release and line protection design The product design is explicitly line protection, not motor protection, so the TM240 curve is sized for cable and busbar protection, not motor thermal overload. If you are replacing a motor-circuit protector, check the trip curve against your motor's locked-rotor time. ## Physical fit — DIN-rail and panel layout Width 76.2 mm (3 inches), depth 70 mm, height 130 mm.","metaTitle":"Siemens SENTRON 3VA1125-5EF32-0DA0 MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-5EF32-0DA0 molded case circuit breaker, 3-pole, 25 A rated, 187 kA breaking at 240 V. TM240 release, undervoltage release. Current production. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","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]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"11 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11255EF320AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB25","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating 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"}},"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=179405&mlfb=3VA1125-5EF32-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0DA0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA1125-5EF32-0DA0 have an undervoltage release?","answer":"Yes, it includes an integrated undervoltage release (UVR) designed for line protection. It trips the breaker when control voltage drops below threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0DA0","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/3VA1125-5EF32-0DA0 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}}