{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-4EF32-0KD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-4EF32-0KD0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0KD0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0KD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-4EF32-0KD0, molded case circuit breaker, 3-pole, 320 A, interrupting ratings 121 kA at 240 V, 75.6 kA at 415 V, line protection design.","salesMarkdown":"Its 320 A continuous current rating holds flat from 40 °C through 50 °C, then derates to 292 A at 70 °C — so in a warm enclosure you lose about 9 % of headroom. The interrupting ratings tell you where this breaker can clear a fault without welding contacts or venting arc: 121 kA at 240 V, 75.6 kA at both 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V. That 121 kA figure at 240 V is the one that covers high-fault utility feeds or transformer secondaries; the 11.9 kA at 690 V still handles most industrial motor-circuit faults. The 3-pole construction and 800 V rated insulation voltage suit it for 3-phase systems up to 690 V line-to-line. ## Mounting dimensions and panel fit ## Built-in auxiliary and shunt trip options This variant ships with three HQ auxiliary switches and a shunt trip (STL) release factory-installed. The auxiliary switches give remote status feedback — open/closed/tripped — without adding an external contact block. The shunt trip lets a safety relay or remote pushbutton force the breaker open, which is useful for emergency-stop circuits or undervoltage protection schemes. The supplied basic switch is order code 3VA13324EF320AA0.","metaTitle":"Siemens 3VA1332-4EF32-0KD0 SENTRON MCCB, 320 A, 3-Pole, 121","metaDescription":"Siemens SENTRON 3VA1332-4EF32-0KD0 molded case circuit breaker, 320 A, 3-pole, 121 kA interrupting at 240 V. Current lifecycle. 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":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 kA","at 690 V":"11.9 kA","at 40 °C":"320 A","at 45 °C":"320 A","at 50 °C":"320 A","at 55 °C":"313 A","at 60 °C":"306 A","at 65 °C":"299 A","at 70 °C":"292 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 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":"80.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA13324EF320AA0","Design Of The Auxiliary Switch":"3 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":"3VA9688-0BL33","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":"3VA9988-0AA12","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=1420077&mlfb=3VA1332-4EF32-0KD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-4EF32-0KD0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1332-4EF32-0KD0 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."},{"question":"What are the interrupting ratings for 3VA1332-4EF32-0KD0 at different voltages?","answer":"At 240 V it interrupts 121 kA; at 415 V and 440 V, 75.6 kA; at 500 V, 52.5 kA; and at 690 V, 11.9 kA."},{"question":"What is the depth of 3VA1332-4EF32-0KD0?","answer":"The depth is 110 mm, which is the critical dimension for shallow backpanel clearance."},{"question":"What is the width of 3VA1332-4EF32-0KD0?","answer":"The width is 138 mm, standard for a 3-pole MCCB in this frame size."},{"question":"Does 3VA1332-4EF32-0KD0 include auxiliary switches or a shunt trip?","answer":"Yes, it ships with three HQ auxiliary switches and a shunt trip (STL) release factory-installed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-4EF32-0KD0","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/3VA1332-4EF32-0KD0 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}}