{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF36-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF36-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF36-0HC0, molded case circuit breaker, 3-pole, 20 A rated current, 220 kA breaking capacity at 240 V AC, line protection design, with shunt trip and 2 auxiliary switches.","salesMarkdown":"## Siemens 3VA1120-6EF36-0HC0 — SENTRON MCCB for Line Protection It carries a 20 A rated current across a wide ambient temperature range — full rating holds from 40 °C up to 55 °C, then derates to 19 A at 60 °C through 70 °C, which is typical for a panel with limited airflow. The 3-pole construction and 800 V rated insulation voltage suit it for 400/480 VAC three-phase systems common in industrial switchgear. Breaking capacity is the headline: 220 kA at 240 VAC, 154 kA at 415 VAC, 121 kA at 440 VAC, and still 17 kA at 500 V and 690 VAC. At 690 V the 17 kA rating still covers most industrial motor-circuit fault levels. ## Built-in Auxiliaries and Release Options This variant ships with a factory-installed shunt trip (STL) release and two HQ auxiliary switches, so it arrives ready for remote tripping and status feedback without adding separate accessory kits. The shunt trip lets a control system or emergency-stop circuit open the breaker remotely — useful on a line where a safety PLC or fire-alarm panel needs to kill power. The two auxiliary switches provide normally-open/normally-closed contacts for indicating the breaker position back to a PLC or status lamp. The supplied basic switch is order code 3VA11206EF360AA0, which is the core MCCB without the auxiliaries — this 3VA1120-6EF36-0HC0 is the fully assembled variant with the shunt trip and auxiliary switches pre-mounted and tested. No communication function is built in (no PROFIBUS or Modbus), so status feedback is limited to the hardwired auxiliary contacts. Dimensions: 130 mm height, 76.2 mm width (3 inches), 70 mm depth. The 76.2 mm width is standard for a 3-pole MCCB in the SENTRON 3VA1 frame — it occupies three 25.4 mm pole spaces on a DIN rail or panel-mount footprint.","metaTitle":"Siemens 3VA1120-6EF36-0HC0 SENTRON MCCB, 20 A, 3-Pole, 220 k","metaDescription":"Siemens 3VA1120-6EF36-0HC0 SENTRON molded case circuit breaker, 20 A rated, 3-pole, 220 kA breaking capacity at 240 VAC. Active production. Quoted to order. Request 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":"76.2 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 500 V":"17 kA","at 690 V":"17 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":"No","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":"3VA11206EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"3VA9688-0BL30","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"H","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=258898&mlfb=3VA1120-6EF36-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0HC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-6EF36-0HC0 at different voltages?","answer":"Breaking capacity is 220 kA at 240 VAC, 154 kA at 415 VAC, 121 kA at 440 VAC, and 17 kA at both 500 VAC and 690 VAC. The 220 kA rating at 240 V provides high fault-interrupting capability for transformer-secondary applications."},{"question":"What auxiliaries are included with 3VA1120-6EF36-0HC0?","answer":"This variant includes a factory-installed shunt trip (STL) release and two HQ auxiliary switches. The shunt trip enables remote tripping from a control system, and the auxiliary switches provide breaker status feedback."},{"question":"Where can I buy 3VA1120-6EF36-0HC0?","answer":"The 3VA1120-6EF36-0HC0 is sourced and quoted to order against an RFQ through independent industrial automation distribution. Availability and current pricing are confirmed at the time of quotation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0HC0","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/3VA1120-6EF36-0HC0 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}}