{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-5ED32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-5ED32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-5ED32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-5ED32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, molded case circuit breaker, 3VM1120-5ED32-0AA0, 3-pole, 20 A (40 °C), TM210 overcurrent release, 187 kA at 240 V, IP40 front.","salesMarkdown":"Rated at 20 A continuous at 40 °C, it holds that rating flat through 55 °C, then derates to 19 A from 60 °C up to 70 °C ambient. That matters if you're stuffing it into a hot corner of a panel next to a drive or transformer — you don't lose headroom until the box hits 60 °C. The interrupting ratings climb steeply with lower voltage: 187 kA at 240 V, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V. For a 20 A frame that's serious fault-clearing ability — it can break a 187 kA bolted fault on a 240 V service without welding its contacts shut. ## Sizing and selectivity in the panel The maximum rating across the frame is 320 A — that's the bus stack limit, not the trip unit. The TM210 release limits this specific variant to 20 A continuous. If you need a higher amp rating in the same physical footprint, you'd step to a different TM release (e.g., TM320 or TM630) on the same 3VM1 frame. Front face carries IP40 protection — splash-resistant from the front but not sealed against hose-down. That covers most industrial control rooms and outdoor cabinets in temperate climates, though sustained operation above 70 °C is out of spec.","metaTitle":"Siemens 3VM1120-5ED32-0AA0 SENTRON MCCB, 3-Pole, 20 A, TM210","metaDescription":"Siemens SENTRON 3VM1120-5ED32-0AA0 molded case circuit breaker, 3-pole, 20 A rated at 40 °C, TM210 release, 187 kA at 240 V. Current production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","title":"3VM1120-5ED32-0AA0","Height":"130 mm","Maximum":"320 A","Minimum":"1 s","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"76 kA","at 500 V":"17 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection TM210, FTFM, In=20A overload protection Ir=20A, not adjustable short-circuit protection Ii=16 x In nut keeper kit","Trip Indicator":"No","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":"12 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":"TM210","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available 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":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/890a9c4e8f724baae13c5de28442f149.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575451&mlfb=3VM1120-5ED32-0AA0"},"ai":{"faq":[{"question":"What are the interrupting ratings for this MCCB?","answer":"187 kA at 240 V, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V. These are the maximum fault currents the breaker can safely interrupt at those voltages."},{"question":"What is the 3VM1120-5ED32-0AA0's continuous current rating at various temperatures?","answer":"It carries 20 A from 40 °C through 55 °C, then derates to 19 A from 60 °C to 70 °C ambient."},{"question":"Where can I buy the 3VM1120-5ED32-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will the 3VM1120-5ED32-0AA0 drop into a panel specified around the 3VA1110-5ED32-0AA0?","answer":"Both are 3-pole SENTRON MCCBs with similar physical footprints (76.2 mm width), so they share the same DIN-rail or panel-mount hole pattern. The main difference is the trip unit and interrupting rating — verify the 3VA1110's specs against your fault-current study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-5ED32-0AA0","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/3VM1120-5ED32-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}