{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0BA0, molded case circuit breaker, 3-pole, 25 A (at 40 °C), TM240 overcurrent release, 187 kA at 240 V, undervoltage release, line protection design.","salesMarkdown":"## MCCB for line protection with high interrupting capacity The interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, dropping to 17 kA at 500 V and 690 V — so for 400 V class systems this breaker has substantial headroom above typical available fault current. ## Built-in undervoltage release; no communication or ground-fault monitoring There is no ground-fault monitoring module and no communication function; it is a standalone thermal-magnetic MCCB. ## Dimensions and environmental range The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a compact 3-pole footprint for DIN-rail or panel-mount enclosures. At 55 °C and 60 °C it derates to 24 A; at 65 °C and 70 °C it derates to 23 A. No trip indicator is fitted.","metaTitle":"Siemens 3VA1125-5EF36-0BA0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1125-5EF36-0BA0 molded case circuit breaker, 25 A, 3-pole, 187 kA breaking capacity at 240 V. Active production. Quoted to order.","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":"3VA11255EF360AA0","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":"3VA9608-0BB11","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":"box terminal on both sides","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=337993&mlfb=3VA1125-5EF36-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1125-5EF36-0BA0 at 240 V?","answer":"187 kA at 240 V, with 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V."},{"question":"What overcurrent release does this MCCB use?","answer":"It uses a TM240 thermal-magnetic release — thermal for overloads, magnetic for short-circuits."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as the auxiliary release."},{"question":"Where can I buy 3VA1125-5EF36-0BA0?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0BA0","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/3VA1125-5EF36-0BA0 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}}