{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0HH0, molded case circuit breaker, 4-pole, 200 A rated continuous current, 121 kA at 240 V, TM240 overcurrent release, shunt trip, IP40 front.","salesMarkdown":"## Siemens 3VA1220-4GF42-0HH0 — 200 A MCCB with TM240 Release The Siemens 3VA1220-4GF42-0HH0 is a SENTRON molded case circuit breaker (MCCB) rated for 200 A continuous current at 40 °C, with a 4-pole configuration and a TM240 thermal-magnetic overcurrent release. It carries a 121 kA interrupting rating at 240 V and 75.6 kA at 415 V, making it suitable for high-fault-current industrial distribution panels where selectivity and short-circuit coordination are critical. ## Interrupting Capacity and Derating Profile Interrupting capacity drops from 121 kA at 240 V to 75.6 kA at 415 V, then to 25 kA at 440 V, and further to 11.9 kA at 690 V. This steep derating with voltage means the breaker's SCCR must be verified against the actual line-to-line voltage at the point of installation — at 480 V systems the available fault current should be checked against the 440 V rating as a conservative bound. Continuous current holds at 200 A from 40 °C through 50 °C ambient, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. In a sealed, uncooled enclosure the effective ampacity may be lower than the nameplate 200 A — plan for the actual ambient inside the panel. The breaker measures 70 mm deep by 140 mm wide by 158 mm high, fitting standard SENTRON 3VA panel cutouts. The 100% N-conductor protection design means the neutral pole is fully rated and trips with the phase poles — no derating needed for 4-wire systems with balanced or unbalanced loads.","metaTitle":"Siemens 3VA1220-4GF42-0HH0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens 3VA1220-4GF42-0HH0 SENTRON molded case circuit breaker, 200 A rated at 40 °C, 4-pole, 121 kA at 240 V. Active 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","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":"Yes","Number of poles":"4","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL30","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%","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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=568443&mlfb=3VA1220-4GF42-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1220-4GF42-0HH0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"What are the key interrupting ratings for 3VA1220-4GF42-0HH0?","answer":"121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. Verify the actual line voltage and available fault current at the installation point."},{"question":"What is the continuous current rating at elevated ambient temperatures?","answer":"200 A from 40 °C to 50 °C, then derated to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. Account for actual enclosure ambient when sizing."},{"question":"What auxiliary contacts does this MCCB include?","answer":"It comes with 2 auxiliary switches and 1 trip alarm switch (HQ configuration), plus a shunt trip (STL) auxiliary release. No communication module or undervoltage release is fitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0HH0","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/3VA1220-4GF42-0HH0 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}}