{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0AF0, molded case circuit breaker, 3-pole, 25 A (40 °C), TM240 thermal-magnetic release, 187 kA interrupting at 240 V AC, line protection design.","salesMarkdown":"The Siemens 3VA1125-5EF32-0AF0 is a 3-pole SENTRON molded case circuit breaker rated for 25 A continuous at 40 °C with a TM240 thermal-magnetic release. It's designed for line protection — think feeder circuits, distribution panels, and branch protection where you need a solid interrupting rating without overcomplicating the BOM. The interrupting capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, and still 75.6 kA at 440 V. At 500 V and 690 V the rating drops to 17 kA, so watch your system voltage if you're spec'ing this into a 690 V distribution — the SCCR headroom narrows fast above 440 V. That's a shallow derating curve — you don't lose much headroom in a warm enclosure, which matters when the panel sits near a furnace line or in a non-conditioned electrical room. ## Physical fit and auxiliary complement Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into most SENTRON distribution blocks and panelboards without re-drilling the mounting plate. That gives you a remote status contact for the PLC or BAS without buying a separate accessory kit. Power loss is 8.5 W maximum at rated current — modest enough that ventilation in a standard IP3X enclosure handles it, but worth checking if you're packing six of these side-by-side in a tight gutter space.","metaTitle":"Siemens 3VA1125-5EF32-0AF0 SENTRON MCCB, 25A, 3-Pole, 187kA","metaDescription":"Siemens 3VA1125-5EF32-0AF0 SENTRON molded case circuit breaker. 25A continuous, 3-pole, TM240 release. 187kA interrupting at 240V. Active production. Sourced 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":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Of The Supplied Basic Switch":"3VA11255EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HQ","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","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=29573&mlfb=3VA1125-5EF32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1125-5EF32-0AF0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"The 3VA1125-5EF32-0AF0 shares the same SENTRON 3VA frame family and identical mounting footprint (130 x 76.2 x 70 mm) as the 3VA1110-5ED36-0AC0. It's a direct mechanical swap — same pole spacing, same DIN-rail or screw-mount pattern. The difference is the TM240 release vs the smaller frame's release, so verify the trip curve matches your coordination study."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0AF0","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/3VA1125-5EF32-0AF0 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}}