{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0CH0, molded case circuit breaker, 200 A, 4-pole, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V, line protection design with undervoltage release.","salesMarkdown":"## Siemens SENTRON 3VA1220-4GF42-0CH0 — 200 A MCCB with High Interrupting Capacity Its interrupting capacity reaches 121 kA at 240 V AC and 75.6 kA at 415 V AC, which means it can safely clear high-fault currents in industrial mains without upstream coordination failure — a key spec for selectivity studies on large switchboards. ## Breaking Capacity Across Voltages — Selectivity Headroom At 440 V the breaker is rated for 52.5 kA, at 500 V for 17 kA, and at 690 V for 11.9 kA. These figures define the maximum fault current the breaker can interrupt at each voltage level; for a 415 V panel with a prospective short-circuit current of 50 kA, the 75.6 kA rating gives comfortable headroom above the 50 kA threshold, avoiding the need for current-limiting fuses upstream. ## Thermal Derating — Continuous Current vs Ambient Temperature At 55 °C it derates to 194 A, at 60 °C to 188 A, at 65 °C to 182 A, and at 70 °C to 176 A. For a panel operating at 55 °C, the 194 A limit means a 200 A load would trip thermally; the BOM should either reduce the load or account for the 3 % derating. The 4-pole design occupies the same width as four single-pole MCCB modules, so a panel layout that allocates 140 mm per breaker row will accept this unit without re-spacing. ## Environmental and Electrical Ratings Insulation voltage is rated at 800 V.","metaTitle":"Siemens 3VA1220-4GF42-0CH0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens SENTRON 3VA1220-4GF42-0CH0 molded case circuit breaker, 200 A rated, 4-pole, breaking capacity 121 kA at 240 V. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","Maximum":"200 A","Minimum":"200 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"17 kA","at 690 V":"11.9 kA","at 40 °C":"200 A","at 45 °C":"200 A","at 50 °C":"200 A","at 55 °C":"194 A","at 60 °C":"188 A","at 65 °C":"182 A","at 70 °C":"176 A","Depth [In]":"2.76 in","Width [In]":"5.51 in","Height [In]":"6.22 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":"44.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12204GF420AA0","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":"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","design of the N-conductor protection":"100%","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":"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":"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=568437&mlfb=3VA1220-4GF42-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0CH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1220-4GF42-0CH0?","answer":"Pricing and availability are confirmed at quote time against an RFQ. Submit a request through the storefront for a current quote."},{"question":"What is the breaking capacity of 3VA1220-4GF42-0CH0 at 415 V?","answer":"At 415 V the breaking capacity is 75.6 kA, which provides comfortable headroom for most industrial 400 V distribution panels."},{"question":"Does 3VA1220-4GF42-0CH0 include an undervoltage release?","answer":"Yes, it includes an undervoltage release (UVR) that trips the breaker when supply voltage drops below a set threshold."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0CH0","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/3VA1220-4GF42-0CH0 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}}