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Fluke 100 CLKT IR Window


Save Time and Conduct More Efficient Electrical Infrared Inspections

Once you've installed a Fluke infrared window there is no more need to power down or remove panel doors – you may never have to open the panel door again. Inspections are now conducted quickly, easily and safer than they were before.

Your greatest investment is not what's behind the panel door; your priority is to offer the ultimate protection for the electricians, engineers and inspectors who risk their lives every day doing their jobs.

CLKT infrared window is engineered and tested to withstand electric-arcs up to 50 kA for 30 cycles.


Optic Data Specifications
Crystal insert diameter 50 mm (1.97 in)
Viewing aperture diameter 43 mm (1.7 in)
Viewing aperture area 1452 mm2 (2.25 in2)
Thickness 2 mm (0.08 in)
ClirVu coating Yes
Shortwave IR capable Yes
Midwave IR capable Yes
Longwave IR capable Yes
Ultraviolet (UV) capable Yes
Visual capable Yes
Fusion capable Yes
Underwriters Laboratories (UL) recognized Yes
UL50 environmental Type 3/12
UL746C N/A (Polymer Free)
UL94 N/A (Polymer Free)
Canadian Standards Association (CSA) approval Yes
Environmental Type 3/12
KEMA (Arc-Testing)
ANSI C37.20.7 50 kA for 30 cycles @ 60 Hz
EEMACS 14-1 Type-B 40 kA for 30 cycles @ 60 Hz
ASTA (Arc-Testing)
IEC 62271 20 kA for 5 cycles @ 50 Hz
Cyclic humidity withstand Yes
Vibration withstand Yes
Resistance of insulating materials to 100° Yes
Resistance of insulating material to ball pressure (Brinell) Yes
Glow-wire test 650°C Yes
Lloyds Register
Up to 11 kV marine switchgear, indoor or outdoor Yes
General Specifications
Maximum temperature Gaskets 250°C (482°F)
Body 659°C (1219°F)
Optic 1400°C (2552°F)
Gaskets Low smoke and fume (LSF) compliant silicone
IP rating IP65
NEMA rating Type 3/12 (UL and CSA Third Party Certified)
Vibration rating IEC60068-2-6
Humidity rating IEC60068-2-3
Pull-out strength Up to 630 kg (1388 lb)
Warranty Lifetime replacement against manufacturing defects


Model Name Consist of Price
FLUKE 100-CLKT Fluke 100 CLKT IR Window for Outdoor and Indoor Applications
  • 4 In. (50mm) C-Range IR Window
  • Kwik Twist
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