{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-3GF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-3GF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-3GF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3GF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-3GF42-0AA0, molded case circuit breaker, 125 A, 4-pole, 75.6 kA interrupting at 240 V, line protection, TM240 release, IP40 front.","salesMarkdown":"## Siemens 3VA1112-3GF42-0AA0 — SENTRON MCCB, 125 A, 4-Pole Per the datasheet, interrupting capacity reaches 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — these figures govern the available fault current the breaker can safely clear without upstream cascade. Current derating is documented across the operating range: the breaker carries its full 125 A from 40 °C through 50 °C, then steps down to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. For a panel builder, that means the 50 °C threshold is the practical limit for nameplate rating — above that, the load must be reduced per the thermal curve. Maximum power loss is 28.1 W, which factors into enclosure thermal calculations. Physical dimensions are 130 mm height, 101.6 mm width, and 70 mm depth. Rated insulation voltage is 800 V, with operating temperature range from -25 °C to 70 °C and storage from -40 °C to 80 °C. The 4-pole form factor occupies roughly 102 mm of rail width — plan for that footprint plus side clearance for busbar connections and cable bending radius. No communication function or auxiliary voltage trigger is fitted on this base variant; if remote signaling is needed, the 3VA family accepts plug-in accessory modules (shunt trip, auxiliary contacts) that slot into the breaker side.","metaTitle":"Siemens 3VA1112-3GF42-0AA0 SENTRON MCCB, 125 A, 4-Pole, 75.6","metaDescription":"Siemens 3VA1112-3GF42-0AA0 SENTRON molded case circuit breaker, 125 A, 4-pole, 75.6 kA interrupting at 240 V. Current production lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","Maximum":"125 A","Minimum":"125 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 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]":"4 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"4","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":"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":"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","design of the N-conductor protection":"100%","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":"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/2ed49f877a07912a2b3b64a5d9d51abd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=123623&mlfb=3VA1112-3GF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-3GF42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the interrupting capacity ratings for the 3VA1112-3GF42-0AA0?","answer":"The interrupting capacity is 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. These values determine the maximum fault current the breaker can safely clear at each voltage level."},{"question":"Where can I buy the 3VA1112-3GF42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the thermal derating curve for the 3VA1112-3GF42-0AA0?","answer":"The breaker carries its full 125 A from 40 °C through 50 °C. Above that, it derates to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. The 50 °C threshold is the practical limit for nameplate rating."},{"question":"What are the physical dimensions of the 3VA1112-3GF42-0AA0?","answer":"Height is 130 mm, width is 101.6 mm, and depth is 70 mm. The front face is rated IP40 for protection against solid objects and tools."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-3GF42-0AA0","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/3VA1112-3GF42-0AA0 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}}