Keeping your world up and running.®

Fluke CV401 ClirVu® 95 mm (4 in) Infrared Window

Increase facility safety for your maintenance staff. ClirVu® infrared windows allow electrical infrared inspections without having to remove the panel door.

CV401 IR Window
  • CV401 IR Window
  • Infrared Inspection with Fluke CV401 IR Window
  • Inspect electrical equipment behind panels with Fluke IR Windows
  • Inspect through closed panel doors with CV IR Windows
  • A company's greatest investment is not the equipment that's behind the panel door; top priority is to offer the ultimate protection for the electricians, engineers and inspectors who risk their lives every day doing their jobs.

    The ClirVu® coating - exclusive to Fluke infrared windows - seals the optic prior to assembly to protect against moisture degradation making it perfect for very hot and very cold environments.

    Each Fluke infrared window is delivered with an identification plate attached for unique, on-site numbering for rapid location confirmation and faster repairs.

    If you don't need a security key access option see the CV400 IR Window.

    The CV Series of infrared windows are also available in 50 mm (2 in) and 75 mm (3 in) sizes.

  • Installs and grounds in less than 5 minutes

    Save time with quick and easy installation with the CV Series – 5 minutes or less.

    • One technician
    • One hole with standard Greenlee® punch
    • Panel door does not need to be removed
    • Grounds instantly to metal enclosure with patent-pending AutoGround™ process
    • Maintains panel arc test ratings up to 63kA when properly installed

    Work more efficiently with Fluke ClirVu® CV401 95 mm (4 in) Infrared Windows

    • NFPA 70E processes significantly reduced due to less work permit requirements
    • Faster and more comfortable inspections because full PPE is often not required
    • Reduce the risk of arc-flash and electrocution, increase the safety of your personnel and reduce the time and cost of preventive maintenance
    • CV401 is Torture Tested™ to the highest arc blast test ratings IEEE C37.20.7: 63 kA Arc tested at KEMA, UL 50/50E/50V, UL1558, IEC60529-1: IP67, IEC 60068, NEMA 4/12, CSA C22.2 NO. 14-13:2012, and CE
    • Convenience of both quick turn or security keyed access
  • General Specifications
    Size 95 mm (4 in)
    Voltage range Any
    NEMA environment type Type 4/12 (indoor/outdoor)
    AutoGround™ Yes
    ClirVu® optic Yes
    Operating temperature -40°C to +232°C (-40° F to +450°F) and +260°C (500°F) intermittent
    Compatible with all Fluke cameras Yes
    Jam nut locking system Yes
    Cover and fastener permanently attached Yes
    Single-hole install Yes
    Hand turn and security key door latch options Yes
    Visual inspection and fusion capable Yes
    Short/Mid/Long-wave IR and UV capable Yes
    Ratings and Testing
    Arc-tested (IEEE C37.20.7) 63 kA for 30 cycles @ 60 Hz at KEMA
    UL 50 V component recognition Yes
    UL 50 / NEMA environmental rating NEMA Type 4/12
    UL1558 Yes
    CSA C22.2 No. Yes
    CSA type rating Type 4
    IP rating IP67 at TUV
    Lloyds register Up to 11 kV marine switchgear, indoor or outdoor (offshore only)
    Vibration rating IEC60068-2-6 at TUV
    Humidity rating IEC60068-2-3 at TUV
    Actual mounting hole diameter required 115.42 mm (4.544 in)
    Greenlee® punch kit = punch/die 742BB = 2984AV/2983AV
    Recommended max panel thickness 10 gage
    Overall window height 189.3 mm (7.45 in)
    Overall window width 147.1 mm (5.79 in)
    Overall window thickness 23.0 mm (0.90 in)
    Door latch Security Key
    Optic insert diameter 95 mm (3.74 in)
    Viewing aperture diameter 87.63 mm (3.450 in)
    Viewing aperture area 6032 mm2 (9.35 in2)
    Thickness 4 mm (0.16 in)
    Warranty Lifetime replacement against manufacturing defects
    • Models
      Model Name Description  
      Fluke CV401 Fluke CV401 ClirVu® 95 mm (4 in) Infrared Window


      • 4 in (95 mm) IR Window
      • Security key door latch
      • Warranty statement 
      • Fluke IR Windows are complete, assembled and ready for installation
    • Manuals
      CV200, CV300, CV400 CE Declaration of Conformity Download
    • Application Notes
      Concerned about arc flash? Download
      IR window field of view guide Download
      UL recognized and UL listed: What's the difference? Download
    • Brochures
      Fluke IR Windows Brochure Download
    • Data Sheets
      ClirVu CV200/300/400 IR Windows Data Sheet Download
    • White Papers
      Concerned About Arc-flash and Electric Shock? Download