{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5EF36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5EF36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5EF36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5EF36-0DC0, molded case circuit breaker, 3-pole, 125 A rated continuous current (Iu), line protection, TM240 overcurrent release, 187 kA at 240 V.","salesMarkdown":"It's a line-protection device — meaning it's sized to protect cables and busbars, not motor loads, so don't try to hang a motor starter off it without checking the coordination study. This MCCB delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. That's a high-interrupting-capacity (HIC) class breaker; you'd spec it at the main distribution point where fault currents are highest, not downstream where 25–50 kA is usually enough. The 690 V figure of 17 kA is still respectable for a 125 A frame — some competitors drop to single digits at that voltage. ## Thermal derating — the real continuous current depends on your panel temp At 55 °C it's 120 A, at 60 °C it's 117.5 A, at 65 °C it's 115 A, and at 70 °C it's 112.5 A. If your panel runs at 55 °C (common in sealed, sun-exposed enclosures), you still get 120 A out of it. Width is 76.2 mm, depth is 70 mm, height is 130 mm. That width — roughly 3 inches — is standard for a 125 A frame in the SENTRON 3VA platform. It's a screw-mount breaker, not a plug-in; you'll need busbar or cable connections. ## Auxiliary releases and accessories Comes with an undervoltage release (UVR) — part of the design, not an add-on. That means if control voltage drops, the breaker trips. The integrated auxiliary trip is order code 3VA9608-0BB25 — if you need to replace just that module, that's the part number to order separately. No voltage trigger, no communication function, no phase failure detection, no ground fault monitoring. This is a basic line-protection MCCB with UVR and aux contacts — nothing fancy, but reliable for the job.","metaTitle":"Siemens 3VA1112-5EF36-0DC0 SENTRON MCCB, 125 A, 3-Pole, Line","metaDescription":"Siemens SENTRON 3VA1112-5EF36-0DC0 molded case circuit breaker, 125 A rated continuous current, 3-pole, line protection, 187 kA at 240 V. Current lifecycle. Sourced to order agains","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 690 V":"17 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":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"M","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":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=225784&mlfb=3VA1112-5EF36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1112-5EF36-0DC0 at 415 V?","answer":"121 kA at 415 V. That's a high-interrupting-capacity rating suitable for main distribution points where fault currents are highest."},{"question":"What is the continuous current rating of this MCCB at 55 °C?","answer":"120 A at 55 °C ambient. The derating curve is shallow — you lose only about 4 % from the 125 A rating at 40 °C."},{"question":"Does 3VA1112-5EF36-0DC0 include an undervoltage release?","answer":"Yes, it comes with an undervoltage release (UVR) as part of the design. If control voltage drops, the breaker trips automatically."},{"question":"Where can I buy 3VA1112-5EF36-0DC0 and what is the lead time?","answer":"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 lead time and price."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5EF36-0DC0","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/3VA1112-5EF36-0DC0 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}}