{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1110-4EF32-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1110-4EF32-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1110-4EF32-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1110-4EF32-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1110-4EF32-0AG0, molded case circuit breaker, 3-pole, TM240 thermal-magnetic release, 100 A rated at 40 °C, breaking capacity 121 kA at 240 VAC, 70 mm depth, 76.2 mm width, 130 mm height.","salesMarkdown":"The Siemens SENTRON 3VA1110-4EF32-0AG0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection, carrying a continuous current rating of 100 A at 40 °C and fitted with a TM240 thermal-magnetic release. Its interrupting capacity reaches 121 kA at 240 VAC, stepping down to 75.6 kA at 415 VAC and 52.5 kA at 440 VAC — figures that govern the available fault current the installation can handle without an upstream breaker. ## Thermal derating — what the 100 A rating means in a warm panel The 100 A rating holds flat from 40 °C through 50 °C, then steps down: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. In a sealed enclosure with multiple breakers ganged, the 70 °C derated figure (91 A) is the one to design to — the breaker will not trip nuisance on a 90 A continuous load in that environment. The TM240 thermal-magnetic release uses a bimetal element for overload protection and a magnetic coil for short-circuit; the thermal curve follows the ambient inside the enclosure, not the control-room temperature. ## Breaking capacity by system voltage — selectivity planning The 3VA1110-4EF32-0AG0 delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The steep drop above 440 V means this breaker is primarily a 415 V / 440 V class device for high-fault installations; at 690 V the 11.9 kA rating limits it to lower-fault panels or requires a current-limiting upstream device for coordination. The breaker measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The integrated auxiliary switch configuration (1 auxiliary switch + 1 trip alarm switch HP) provides status feedback and trip indication without an add-on module, saving a DIN-rail slot. The trip indicator is present on the front face for quick fault isolation during commissioning or troubleshooting.","metaTitle":"Siemens 3VA1110-4EF32-0AG0 SENTRON MCCB, 100 A, 3-Pole, 121","metaDescription":"Siemens SENTRON 3VA1110-4EF32-0AG0 molded case circuit breaker. 100 A rated, 3-pole, TM240 thermal-magnetic release. Breaking capacity 121 kA at 240 VAC. Current lifecycle status.","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 40 °C":"100 A","at 45 °C":"100 A","at 50 °C":"100 A","at 55 °C":"98 A","at 60 °C":"96 A","at 65 °C":"94 A","at 70 °C":"91 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":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"25 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11104EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HP","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","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB11","Switching Capacity Class Of The Circuit Breaker":"S","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=303524&mlfb=3VA1110-4EF32-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1110-4EF32-0AG0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 3VA1110-4EF32-0AG0 at 415 V?","answer":"At 415 VAC the interrupting rating is 75.6 kA. At 240 VAC it reaches 121 kA, and at 440 VAC it is 52.5 kA. The rating drops to 11.9 kA at both 500 V and 690 V."},{"question":"Will the 3VA1110-4EF32-0AG0 drop into a panel designed for the 3VA1110-5EF32-0AM0?","answer":"Both breakers share the same SENTRON 3VA1110 frame dimensions — 76.2 mm width, 130 mm height, 70 mm depth — so the mechanical fit is identical. The electrical difference is the overcurrent release: this unit uses a TM240 thermal-magnetic release, while the -5EF32-0AM0 variant uses a different release code. Verify the trip curve matches your coordination study before swapping."},{"question":"How do I get current pricing and availability for the 3VA1110-4EF32-0AG0?","answer":"The part is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current pricing and availability; no live stock or price figures are published on this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1110-4EF32-0AG0","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/3VA1110-4EF32-0AG0 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}}