{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0CC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0CC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0CC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0CC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0CC0, molded case circuit breaker, 3-pole, 25 A (at 40 °C), breaking capacity 187 kA at 240 V AC, with undervoltage release and 2 auxiliary switches HQ.","salesMarkdown":"Its 3-pole construction and 25 A rating at 40 °C make it a fit for feeder circuits and branch protection in commercial and industrial switchgear. ## Breaking capacity — what the voltage columns tell you This breaker carries a 187 kA interrupting rating at 240 V AC, dropping to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. ## Thermal derating — the continuous current curve At 55 °C it derates to 24 A, holds at 24 A through 60 °C, then steps to 23 A at 65 °C and 70 °C. The flat profile up to 50 °C gives headroom in a warm enclosure; above that the 1–2 A drop is predictable and per the datasheet curve. ## Integrated undervoltage release and auxiliary switching The 3-pole width (76.2 mm, or 3 inches) is the standard SENTRON 3VA footprint for this frame size — it occupies three adjacent 25 mm DIN-rail modules if panel-mounted, or bolts directly to a mounting plate. Depth of 70 mm (2.76 in) leaves clearance for rear-access terminals in a typical 200 mm deep enclosure.","metaTitle":"Siemens 3VA1125-5EF32-0CC0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1125-5EF32-0CC0 molded case circuit breaker, 25 A rated at 40 °C, 3-pole, 187 kA breaking capacity at 240 V. Active production. Undervoltage release included. So","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 Switch":"2 auxiliary switches HQ","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":"3VA9608-0BB24","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=517702&mlfb=3VA1125-5EF32-0CC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0CC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF32-0CC0 and get a price?","answer":"This MCCB is sourced to order against an RFQ through independent distribution channels. Submit an RFQ for current pricing and availability — the quote will reflect real-time market conditions."},{"question":"What is the breaking capacity of 3VA1125-5EF32-0CC0 at 415 V?","answer":"121 kA at 415 V AC. The full voltage-dependent curve is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V."},{"question":"Does 3VA1125-5EF32-0CC0 include an undervoltage release?","answer":"Yes — it is factory-fitted with an undervoltage release (UVR) and two HQ auxiliary switches for status feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0CC0","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/3VA1125-5EF32-0CC0 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}}