{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3ED12-0AA0, 1-pole molded case circuit breaker, 125 A, TM210 thermal-magnetic release, 52.5 kA breaking capacity at 240 V AC.","salesMarkdown":"It uses a TM210 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element catches short circuits — and carries a 52.5 kA interrupting rating at 240 V AC, which drops to 7.5 kA at 415 V AC. The 70 mm depth and 25.4 mm width mean it fits standard panelboard slots without crowding adjacent poles. ## Thermal derating — what the 125 A rating actually means The 125 A rating holds flat from 40 °C to 50 °C, then begins a gradual decline: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. That derating curve is the one you size against — if your panel ambient runs 60 °C, this breaker is good for 120 A continuous, not 125 A. Ignoring the curve is how you nuisance-trip a line.","metaTitle":"Siemens 3VA1112-3ED12-0AA0 SENTRON MCCB, 125 A, 1-Pole, TM21","metaDescription":"Siemens 3VA1112-3ED12-0AA0 SENTRON molded case circuit breaker, 1-pole, 125 A rated at 40 °C, TM210 release, 52.5 kA at 240 V. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"52.5 kA","at 415 V":"7.5 kA","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"122 A","at 60 °C":"120 A","at 65 °C":"117 A","at 70 °C":"114 A","Depth [In]":"2.76 in","Width [In]":"1 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"1","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":"9.37 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"500 V","Design Of The Overcurrent Release":"TM210","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":"415 V","operating voltage / at DC / rated value":"125 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","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":"https://cdn.aoctrl.com/a952c3111e560b65ee1aa89a2b499bc7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=3638&mlfb=3VA1112-3ED12-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3ED12-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3ED12-0AA0","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/3VA1112-3ED12-0AA0 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}}