{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EE32-0BF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EE32-0BF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EE32-0BF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EE32-0BF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EE32-0BF0, molded case circuit breaker, 3-pole, 25 A at 40 °C, 187 kA interrupting at 240 V, line protection with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA1125-5EE32-0BF0 is a 3-pole molded case circuit breaker rated 25 A continuous at 40 °C, with an interrupting capacity of 187 kA at 240 V AC. The interrupting curve drops to 121 kA at 415 V and 75.6 kA at 440 V, so verify the available fault current at your service voltage before committing the BOM line. This is a line-protection design — not a motor-protective breaker with integrated overloads. It sits upstream of a motor starter or downstream of a main breaker, clearing short-circuits while leaving overload coordination to a separate thermal-magnetic or electronic relay. The built-in undervoltage release (UVR) drops the breaker open when control voltage falls below a set threshold, which is useful for safety circuits that need to guarantee a de-energized state on power loss. The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard SENTRON 3VA1 footprint that fits existing DIN-rail or screw-mount panel layouts. The auxiliary switch and trip alarm switch (1 each, HQ design) snap into the accessory slot on the left side; wire them before the breaker is bolted in for easier access. Ambient temperature derating is minimal up to 50 °C — still 25 A — then drops to 24 A at 55 °C and 23 A at 70 °C. If the panel runs hot (say, crowded with drives or transformers), size the load at the 70 °C figure, not the 40 °C nameplate. ## What's on the nameplate The breaker ships with a trip indicator (mechanical flag on the handle) so a technician can see at a glance whether it tripped on fault versus being manually switched off. There is no voltage trigger, no communication function, and no ground-fault monitoring version on this variant — it is a straightforward line-protection MCCB with undervoltage release and one auxiliary plus one alarm switch. The supplied basic switch is order code 3VA11255EE320AA0. Maximum power loss is 11 W, which matters for enclosure heat load calculations when multiple breakers are ganged.","metaTitle":"Siemens 3VA1125-5EE32-0BF0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1125-5EE32-0BF0 molded case circuit breaker, 25 A rated, 3-pole, 187 kA interrupting at 240 V. Line protection with undervoltage release. Current lifecycle stage","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":"Yes","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":"3VA11255EE320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch 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":"TM220","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=767995&mlfb=3VA1125-5EE32-0BF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EE32-0BF0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EE32-0BF0","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/3VA1125-5EE32-0BF0 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}}