{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2340-5HL42-0CL0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2340-5HL42-0CL0","canonicalUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0CL0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0CL0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2340-5HL42-0CL0, molded case circuit breaker, 4-pole, 400 A continuous, 187 kA at 240 V, line protection with undervoltage release.","salesMarkdown":"The Siemens SENTRON 3VA2340-5HL42-0CL0 is a 4-pole molded case circuit breaker rated for 400 A continuous current at 40 °C, with a maximum breaking capacity of 187 kA at 240 V. At 415 V and 440 V the breaking capacity holds at 121 kA, dropping to 75.6 kA at 500 V and 7.5 kA at 690 V, so the voltage class of your system determines which rating governs the installation. The continuous current derates from 400 A at 50 °C down to 340 A at 70 °C, meaning the breaker must be sized for the actual ambient temperature in the enclosure, not just the nameplate 400 A. This is a line-protection design (not motor or generator protection), so it's intended for feeder circuits in switchboards and panelboards where the primary need is overcurrent and short-circuit protection of cables and busbars. The 4-pole configuration suits three-phase systems with a fully rated neutral — common in North American 120/208 V and 277/480 V wye services, or European TN systems where the neutral is switched. That's enough for remote status indication — the trip alarm signals a fault condition, the electrical alarm switch provides a separate signal for the breaker's on/off state, and the two auxiliary switches can be wired into a PLC or SCADA for position feedback. The basic switch assembly is order code 3VA2340-5HL42-0AA0, meaning the -0CL0 suffix adds the UVR and the specific auxiliary switch configuration. If you're replacing a failed unit, verify the aux switch count matches your existing wiring — the 2+1+1 layout is more than the bare minimum and may require additional terminal space in the panel. For a BOM line, the key fit confirmations are the 400 A continuous rating (verify your load doesn't exceed the derated value at your enclosure ambient), the 4-pole configuration, and the breaking capacity at your system voltage. The 187 kA at 240 V covers most North American low-voltage distribution, while the 121 kA at 415 V suits European 400 V systems. If you're working at 690 V, the 7.5 kA breaking capacity is a significant drop — verify your fault current doesn't exceed that. ## Physical integration The 184 mm width for a 4-pole breaker is typical for the 400 A frame size; verify the mounting footprint matches your existing busbar or lug kit spacing before committing the panel layout. Maximum power loss is 98.5 W at rated current.","metaTitle":"Siemens 3VA2340-5HL42-0CL0 SENTRON MCCB, 400 A, 4-Pole, 187","metaDescription":"Siemens SENTRON 3VA2340-5HL42-0CL0 molded case circuit breaker, 400 A continuous, 4-pole, 187 kA breaking at 240 V. Active production. Sourced to order. Request RFQ for pricing and","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","Maximum":"4 000 A","Minimum":"600 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"7.5 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"385 A","at 60 °C":"370 A","at 65 °C":"355 A","at 70 °C":"340 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Trip Indicator":"Yes","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"98.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA2340-5HL42-0AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"400 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU320","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 50%; 100%","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB24","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"400 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB22","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c1b3b6c5f6d67465025ac41848ceb75e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=108849&mlfb=3VA2340-5HL42-0CL0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2340-5HL42-0CL0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2340-5HL42-0CL0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation at quote time."},{"question":"What is the breaking capacity of 3VA2340-5HL42-0CL0 at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V."},{"question":"What auxiliary switches come with 3VA2340-5HL42-0CL0?","answer":"It includes 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ, plus an undervoltage release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2340-5HL42-0CL0","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/3VA2340-5HL42-0CL0 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}}