{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series molded case circuit breaker, 3-pole, 20 A rated current, 75.6 kA breaking capacity at 240 V AC, line protection design with shunt trip and auxiliary switches.","salesMarkdown":"Breaking capacity is the headline number here: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. That 75.6 kA at 240 V gives substantial fault-current headroom for North American 240/120 V split-phase or 240 V delta services; the 52.5 kA at 415 V covers most European 400 V distribution without needing a current-limiting upstream device. Power loss at rated load is 12 W maximum — a moderate figure that factors into enclosure thermal calculations when grouping several breakers. ## Integrated accessories and wiring The shunt trip allows remote tripping from a PLC or emergency-stop circuit; the auxiliary switches provide status feedback for the breaker position (open/closed), and the trip alarm signals a fault trip distinct from manual opening. No undervoltage release is fitted — if UVR protection is needed, this is not the variant. The breaker includes a voltage trip indicator and a mechanical trip indicator, giving clear local status. No communication function or ground-fault monitoring is built in; this is a straightforward line-protection device without integrated metering or Modbus. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits Siemens 3VA panelboards and most DIN-rail adapter kits.","metaTitle":"Siemens 3VA1120-3EF36-0KH0 SENTRON MCCB, 20A, 75.6kA at 240V","metaDescription":"Siemens SENTRON 3VA1120-3EF36-0KH0 molded case circuit breaker, 3-pole, 20A rated at 40°C, 75.6kA breaking capacity at 240V. 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":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 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","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"Yes","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","Of The Supplied Basic Switch":"3VA11203EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","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":"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":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=510844&mlfb=3VA1120-3EF36-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0KH0/alternatives.json"},"ai":{"faq":[{"question":"What accessories are included with this MCCB?","answer":"This variant includes a shunt trip (STL) release, two auxiliary switches, and one trip alarm switch (HQ). It does not include an undervoltage release or ground-fault monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0KH0","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/3VA1120-3EF36-0KH0 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}}