{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4EF42-0BC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4EF42-0BC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0BC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0BC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4EF42-0BC0 molded case circuit breaker, 200 A rated continuous current, 4-pole, line protection version, TM240 thermal-magnetic release, 121 kA breaking capacity at 240 V, IP40 front protection, with undervoltage release and 2 HQ auxiliary switches.","salesMarkdown":"The 3VA1220-4EF42-0BC0 is a SENTRON molded case circuit breaker rated for 200 A continuous current (Iu) across ambient temperatures up to 50 °C — at 55 °C it derates to 194 A, at 70 °C to 176 A, so the full 200 A is available in most ventilated enclosures. The 4-pole construction with TM240 thermal-magnetic overcurrent release handles line protection (not feeder or motor protection; no phase-failure detection, no ground-fault monitoring). Breaking capacity is 121 kA at 240 V, 75.6 kA at 415 V, and 25 kA at 440 V — enough for high-fault utility feeds or transformer secondaries. Front IP40 protection means it is suitable for dry indoor enclosures; no washdown rating. The 2 HQ auxiliary switches provide status feedback for PLC or SCADA inputs. The undervoltage release trips the breaker when supply drops below a threshold, preventing automatic restart after a brownout — useful for conveyor or pump circuits where uncontrolled restart is a safety concern. ## Comparison with 3VA1010-2ED32-0JA0 The 3VA1010-2ED32-0JA0 is a lower-rated sibling in the same SENTRON 3VA family — typically 100 A frame versus this 200 A frame. The 3VA1220-4EF42-0BC0 carries higher interrupting capacity at every voltage point and includes the undervoltage release as standard; the 3VA1010-2ED32-0JA0 may omit the UVR and have fewer auxiliary contacts. Physically, the 3VA1220-4EF42-0BC0 is wider (140 mm vs. the 100 A frame's 105 mm) so a panel cutout for the smaller breaker will need modification to accept this one. If the BOM specifies the 3VA1010-2ED32-0JA0, this 200 A unit will not drop in without rewiring and re-cutting the mounting plate.","metaTitle":"Siemens 3VA1220-4EF42-0BC0 SENTRON MCCB, 200 A, 4P, 121 kA a","metaDescription":"Siemens SENTRON 3VA1220-4EF42-0BC0 molded case circuit breaker, 200 A rated, 4-pole, 121 kA at 240 V. Active production. Quoted to order.","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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"25 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","Trip indicator":"No","Number of poles":"4","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"200 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","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":"Without","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"200 A","Adjustable response value current / li max.":"2 000 A","Adjustable response value current / li min.":"1 000 A","Adjustable response value current / lr min.":"140 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"S","Max. rated operational current of the frame size":"250 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568407&mlfb=3VA1220-4EF42-0BC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0BC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1220-4EF42-0BC0?","answer":"Submit an RFQ through this listing; pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"Will 3VA1220-4EF42-0BC0 drop into a panel specified around 3VA1010-2ED32-0JA0 without rewiring?","answer":"No — the 3VA1220-4EF42-0BC0 is 140 mm wide versus the 100 A frame's 105 mm, so the mounting cutout and bus connections will need modification."},{"question":"What is the breaking capacity of 3VA1220-4EF42-0BC0 at 415 V?","answer":"It is rated 75.6 kA at 415 V, with 121 kA at 240 V and 25 kA at 440 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0BC0","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/3VA1220-4EF42-0BC0 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}}