{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5MH32-0AA0, molded case circuit breaker (MCCB), 3-pole, 125 A, TM120M thermal-magnetic trip, 187 kA at 240 V, IP40 front, 70 x 76.2 x 130 mm.","salesMarkdown":"Breaking capacity reaches 187 kA at 240 V, dropping to 121 kA at 415 V and 75.6 kA at 440 V — numbers that matter when you're coordinating downstream with a motor starter and need the MCCB to take the full fault without upstream interruption. ## Current derating and thermal budget Above that, it derates linearly: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. The maximum power loss is 28.1 W, which is the heat the breaker dumps into the enclosure; factor that into your panel thermal calculation, especially in a sealed cabinet. ## Panel fit and protection class The breaker measures 70 mm deep by 76.2 mm wide by 130 mm tall — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises.","metaTitle":"Siemens 3VA1112-5MH32-0AA0 SENTRON MCCB, 125 A, 3-Pole, TM12","metaDescription":"Siemens 3VA1112-5MH32-0AA0 SENTRON molded case circuit breaker, 125 A at 40 °C, 3-pole, TM120M thermal-magnetic trip, 187 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":"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":"7.5 kA","at 690 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]":"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":"No","Design Of The Product":"Starter protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"28.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM120M","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","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"I","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":"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/78138b3873b6f35a8286a5f14874163d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=452540&mlfb=3VA1112-5MH32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-5MH32-0AA0 at different voltages?","answer":"Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V. These are the maximum fault currents the breaker can safely interrupt at each voltage level."},{"question":"Where can I buy 3VA1112-5MH32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What trip unit does 3VA1112-5MH32-0AA0 use?","answer":"It uses a TM120M thermal-magnetic overcurrent release. The thermal element provides overload protection with a time-delay characteristic; the magnetic element provides instantaneous short-circuit protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0AA0","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/3VA1112-5MH32-0AA0 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}}