{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0HA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0HA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0HA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0HA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF32-0HA0, 3-pole molded case circuit breaker, 125 A rated continuous current, TM240 overcurrent release, line protection, breaking capacity 121 kA at 240 V.","salesMarkdown":"The Siemens SENTRON 3VA1112-4EF32-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated for 125 A continuous current at 40 °C, with no derating needed up to 50 °C — it holds the full 125 A through that range. Above 50 °C it steps down: 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C. That thermal curve means a panel running at 50 °C ambient gets the full nameplate; above that, the breaker self-limits to stay within its insulation temperature class. Breaking capacity is given at four voltages: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. This is a line-protection variant (not feeder or generator protection), so it is intended for branch-circuit or main-switch duty where the load is a distribution bus or a group of downstream breakers. No auxiliary contacts are fitted (the auxiliary contact version is listed as \"Without\"), so if you need remote status or alarm signaling, you will add an external aux switch or a shunt trip (the integrated auxiliary trip is order code 3VA9688-0BL30). This is a plain line-protection MCCB — no Modbus, no phase-failure detection, no integrated metering. For a panel that needs remote trip or status feedback, the shunt trip plus an external PLC digital input covers it.","metaTitle":"Siemens 3VA1112-4EF32-0HA0 SENTRON MCCB, 125 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1112-4EF32-0HA0 molded case circuit breaker, 125 A rated continuous current, 3-pole, line protection, TM240 release, breaking capacity 121 kA at 240 V. Active pr","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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"120 A","at 60 °C":"117.5 A","at 65 °C":"115 A","at 70 °C":"112.5 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL30","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"125 A","Adjustable response value current / li max.":"1 250 A","Adjustable response value current / li min.":"625 A","Adjustable response value current / lr min.":"88 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=356542&mlfb=3VA1112-4EF32-0HA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0HA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-4EF32-0HA0 and how is it quoted?","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 is the breaking capacity of this breaker at 415 V?","answer":"At 415 V the breaking capacity is 75.6 kA. At 240 V it is 121 kA, at 440 V it is 52.5 kA, and at 690 V it is 11.9 kA."},{"question":"Does this MCCB include auxiliary contacts or communication?","answer":"No. The auxiliary contact version is \"Without\", there is no communication function, no undervoltage release, and no ground-fault monitoring. A shunt trip release is built in, and the integrated auxiliary trip (order code 3VA9688-0BL30) can be added separately."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0HA0","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/3VA1112-4EF32-0HA0 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}}