{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5ED32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5ED32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5ED32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5ED32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5ED32-0CH0, molded case circuit breaker, 3-pole, 125 A at 40 °C, interrupting capacity 187 kA at 240 V AC, with undervoltage release and auxiliary switches.","salesMarkdown":"The Siemens 3VA1112-5ED32-0CH0 is a SENTRON molded case circuit breaker rated for line protection, carrying 125 A per pole at 40 °C ambient and offering a 187 kA interrupting capacity at 240 V AC — enough to handle high-fault industrial feeders without cascading upstream. ## Interrupting capacity — where it fits The 187 kA at 240 V AC drops to 121 kA at 415 V AC and 75.6 kA at 440 V AC, then to 17 kA at 500 V and 690 V. That means it's sized for high-available-fault systems on the low-voltage side of a distribution transformer — think main feeder or large subfeed in a 480 V panel where the bolted-fault current is well above 100 kA. ## Thermal performance and derating 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. If your panel ambient runs at 55 °C, plan for 122 A continuous — not the nameplate 125. Maximum power loss is 30.6 W — modest for a 125 A frame, but enough to matter in a sealed, non-ventilated enclosure. Account for that heat in your thermal budget. The 3-pole width of 76.2 mm (3 inches) is standard for a 125 A frame MCCB — it will fit existing Siemens SENTRON mounting feet and busbar adapters without panel modification. The storage limit is the handling limit, not the running limit.","metaTitle":"Siemens 3VA1112-5ED32-0CH0 SENTRON MCCB, 125A, 3-Pole, 187kA","metaDescription":"Siemens SENTRON 3VA1112-5ED32-0CH0 molded case circuit breaker, 125A rated at 40°C, 3-pole, 187kA interrupting at 240V AC. Active production. UL/IEC. Quoted on request.","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":"17 kA","at 690 V":"17 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":"Yes","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":"Line 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":"3VA11125ED320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM210","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":"3VA9608-0BB24","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=53170&mlfb=3VA1112-5ED32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5ED32-0CH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1112-5ED32-0CH0?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront for a current quote and lead time — we source this active part through independent distribution channels."},{"question":"What is the closest functional second-source to 3VA1112-5ED32-0CH0?","answer":"The peer 3VA1112-5EE32-0AA0 shares the same frame and 3-pole 125 A rating but differs in its interrupting capacity curve and auxiliary switch configuration. The 3VA1112-5ED32-0CH0 carries a higher interrupting capacity at 240 V (187 kA vs the peer's lower rating) and includes an undervoltage release as standard. Panel footprint is identical — no rewiring needed if swapping between these two SENTRON variants."},{"question":"What is 3VA1112-5ED32-0CH0's listed depth?","answer":"70 mm (2.76 in)."},{"question":"What is 3VA1112-5ED32-0CH0's listed width?","answer":"76.2 mm (3 in)."},{"question":"Will 3VA1112-5ED32-0CH0 drop into a panel specified around 3VA1112-5EE32-0AA0 without rewiring?","answer":"Yes — both breakers share the same 3-pole SENTRON frame dimensions (130 x 76.2 x 70 mm) and mounting pattern. The wiring terminals and busbar connections are identical; no panel modification or re-termination is needed for a direct swap."},{"question":"What compliance documentation does this brand provide for 3VA1112-5ED32-0CH0?","answer":"Siemens SENTRON MCCBs carry UL 489, IEC 60947-2, and CSA certification as standard for the series. RoHS and REACH declarations are available through Siemens' documentation portal. Specific cert numbers for this order code can be confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5ED32-0CH0","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/3VA1112-5ED32-0CH0 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}}