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Product selection guide: IR windows

Use our product selection guide to find the IR window that fits your needs best.
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Fluke CV400 1A KO
Fluke 050 clkt 1b
Fluke CV400 ClirVu® 95 mm (4 in) Infrared WindowFluke 050 CLKT IR Window for Outdoor and Indoor Applications
Size95 mm (4 in)50 mm (2 in) 
Voltage rangeAnyAny 
NEMA environment typeType 4/12 (indoor/outdoor)Type 3/12 
AutoGround™   
ClirVu® Optic   
Operating temperature-40 °C to +232 °C (-40 °F to +450 °F) and +260 °C (+500 °F) intermittent-40 °C to +232 °C (-40 °F to +450 °F) 
Arc-tested (IEEE C27.20.7)63 kA for 30 cycles @ 60 Hz at KEMA60 kA for 30 cycles @ 60 Hz at KEMA 
UL 50 V component recognition   
UL 50/NEMA environmental ratingNEMA type 4/12NEMA type 3/12 
UL 1558  
CSA C22.2 No.   
CSA type ratingType 4Type 3/12 
IP ratingIP 67 at TUVIP 55 
Lloyd's RegisterUp to 11 kV marine switchgear, indoor or outdoor (offshore only)Up to 11 kV marine switchgear, indoor or outdoor (offshore only) 
Vibration ratingIEC60068-2-6 at TUVIEC60068-2-6 
Humidity rateIEC60068-2-3 at TUVIEC60068-2-3 
Actual mounting hole diameter required115.42 mm (4.544 in)43.2 mm (1.7 in) 
Greenlee punch kit - punch/die742BB = 2984AV / 2983AV06974/04013 
Door latchHand turnHand turn 
Install time5 minutes or less10 minutes 
Optic insert diameter95 mm (3.74 in)50 mm (2 in) 
WarrantyLifetime replacement against manufacturing defectsLifetime replacement against manufacturing defects 
Welcome to Fluke's Chat GPT Assistant. As with other generative AI systems, this chatbot may occasionally generate incorrect information. For questions regarding the safe use of Fluke tools, please refer to your owners manual. You must comply with your employer’s safety standards and obtain necessary training before using Fluke tools or taking electrical measurements. To speak with a person, visit our Contact Us page.
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