{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1080-4ED42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1080-4ED42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1080-4ED42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1080-4ED42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1080-4ED42-0CH0 molded case circuit breaker, 80 A (40 °C), 4-pole, line protection, 121 kA at 240 V, with undervoltage release and auxiliary switches.","salesMarkdown":"## Siemens SENTRON 3VA1080-4ED42-0CH0 — 80 A MCCB with Undervoltage Release It carries a breaking capacity of 121 kA at 240 V, stepping down to 75.6 kA at 415 V and 52.5 kA at 440 V — figures that matter when you're sizing for fault current at the secondary side of a transformer or a low-impedance bus. The 3VA1080-4ED42-0CH0 delivers 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. Compare that to the 3VA1110-5EF32-0AM0 — a 100 A frame that shares the same SENTRON platform but steps up the thermal rating while the breaking curve at the higher voltages is similar. For a 400 V distribution board where the available fault current is around 50 kA, this breaker has headroom; for a 690 V motor control center with high fault levels, the 11.9 kA rating is the hard limit. Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — a compact 4-pole footprint that fits standard Siemens SENTRON mounting plates or DIN-rail adapters. The auxiliary switch block (2 aux + 1 alarm) adds about 9 mm to the depth; verify clearance if the panel is tight.","metaTitle":"Siemens SENTRON 3VA1080-4ED42-0CH0 MCCB, 80 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1080-4ED42-0CH0 molded case circuit breaker, 80 A, 4-pole, line protection. Breaking capacity 121 kA at 240 V. Active production, sourced to order. Request quote","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 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":"80 A","at 45 °C":"80 A","at 50 °C":"80 A","at 55 °C":"78 A","at 60 °C":"77 A","at 65 °C":"75 A","at 70 °C":"74 A","Depth [In]":"2.76 in","Width [In]":"4 in","Height [In]":"5.12 in","Trip Indicator":"Yes","Number Of Poles":"4","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":"21.7 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA10804ED420AA0","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","design of the N-conductor protection":"without","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":"600 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=207388&mlfb=3VA1080-4ED42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1080-4ED42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1080-4ED42-0CH0?","answer":"Submit an RFQ through this listing. Pricing and stock levels are confirmed at quote time — the part is sourced to order through independent distribution, and current availability is checked on request."},{"question":"What is the breaking capacity of 3VA1080-4ED42-0CH0 at 415 V?","answer":"75.6 kA at 415 V AC. The full curve is 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."},{"question":"What does the undervoltage release (UVR) on this breaker do?","answer":"The integrated undervoltage release (UVR) trips the breaker when the control voltage drops below a threshold, providing automatic disconnection on loss of control power. It's factory-installed and wired to the auxiliary terminal block."},{"question":"What compliance documentation is available for 3VA1080-4ED42-0CH0?","answer":"The SENTRON series carries UL, CSA, and IEC certifications standard for the platform. RoHS and REACH declarations are available from Siemens on request. The insulation voltage is rated 800 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1080-4ED42-0CH0","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/3VA1080-4ED42-0CH0 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}}