{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5MH32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5MH32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5MH32-0BA0, molded case circuit breaker, 3-pole, 125 A (40 °C), TM120M overcurrent release, undervoltage release, 187 kA at 240 V.","salesMarkdown":"## SENTRON 3VA1112-5MH32-0BA0 — starter-protection MCCB with undervoltage release Rated 125 A at 40 °C with a TM120M thermal-magnetic release, it carries a 187 kA interrupting rating at 240 V, dropping to 121 kA at 415 V and 75.6 kA at 440 V, so it handles substantial fault energy in low-voltage distribution. The 125 A rating holds flat from 40 °C through 50 °C, then derates gradually to 114 A at 70 °C — a thermal curve that matches the SENTRON family and keeps the breaker usable in warm enclosures without oversizing. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-pole footprint that fits standard SENTRON 3VA mounting plates and panel cutouts. ## Deployment context — panel and motor branch It's sized for motor starter protection, so it pairs with a contactor and overload relay upstream of a pump, fan, or compressor.","metaTitle":"Siemens 3VA1112-5MH32-0BA0 SENTRON MCCB, 125 A, 3-Pole, UVR","metaDescription":"Siemens SENTRON 3VA1112-5MH32-0BA0 molded case circuit breaker, 125 A rated at 40 °C, 3-pole, TM120M release, undervoltage release. 187 kA at 240 V. Active production. Quoted to or","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":"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":"Yes","Design Of The Product":"Starter protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"30.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11125MH320AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=338013&mlfb=3VA1112-5MH32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5MH32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-5MH32-0BA0 at different voltages?","answer":"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 — so it's a high-interrupting-capacity MCCB suitable for strong fault-current sources at low voltage."},{"question":"Does 3VA1112-5MH32-0BA0 have an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) as a built-in auxiliary release, which trips the breaker when control voltage drops below the dropout threshold."},{"question":"Where can I buy 3VA1112-5MH32-0BA0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote to confirm availability and current pricing."},{"question":"Will 3VA1112-5MH32-0BA0 fit in a panel designed for 3VA1112-5EE32-0AA0?","answer":"Both are 3-pole SENTRON 3VA breakers with the same frame size, so the 130 x 76.2 x 70 mm footprint matches. The difference is the release type and accessories — verify that the TM120M thermal-magnetic curve and UVR are functionally equivalent for your application before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5MH32-0BA0","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/3VA1112-5MH32-0BA0 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}}