ANODIZED ALUMINUM OR

S TA I N L E S S S T E E L W I N D O W S
W I T H P I R M A - L O C K TM

FLIR IR
WINDOWS
The FLIR IRW-Series inspection windows allow for fast,
efficient inspections of electrical gear by eliminating
the need to remove panel covers or open electrical
cabinets. IR Windows add a protective barrier between
you and energized equipment to reduce the risk of
arc flash. They also help keep you in compliance with
NFPA 70E requirements and may allow you to reduce
the amount of personal protective equipment (PPE)
needed. The windows are easy to install and feature a
permanent, hinged cover that flips open effortlessly, so
there are no loose parts to drop, mix up, or lose. Choose
from the standard anti-corrosion anodized aluminum
frame–or if there are mixed-metal concerns–opt for
durable stainless steel. This helps prevent galvanic
corrosion from contact between the stainless steel
cabinet and window frame.

www.flir.com/instruments/ir-windows

WORK SAFELY INCREASE EFFICIENCY DECREASE DOWNTIME

Avoid arc flash incidents Improve productivity and ROI Install easily, with no detachable parts

• Keep panel covers on for a protective barrier • Saves time and labor by eliminating the • Uses standard punch tools for knockouts
from energized equipment, and to prevent nuts need to remove panel covers, so just one for single hole installation
or bolts from dropping into energized cabinets person can complete the inspection
• PIRma-Lock™ ring nut speeds installation,
• Work confidently with the knowledge that IRW- • May reduce the number of protective automatically grounds, and locks window tight
Series windows meet NFPA 70E safety requirements layers inspectors need to wear
• Stainless steel option avoids contact between
• Inspect more frequently to ensure equipment is in • Supports thermal, MSX®, and visual inspections dissimilar metals to resist corrosion
good condition, and reduce the potential of incidents with broadband crystal IR window that also allows
laser pointers and illumination to shine through
S P E C I F I C AT I O N S

Model/Size IRW-2C/2S 2” Window IRW-3C/3S 3” Window IRW-4C/4S 4” Window

NEMA Environment Type Type 4/12 (outdoor/indoor) Type 4/12 (outdoor/indoor) Type 4/12 (outdoor/indoor)

Voltage Range Any Any Any

Automatically Grounded Yes Yes Yes

Maximum Operating Temperature 260°C/500°F 260°C/500°F 260°C/500°F

Body Material - IRW-xC Type Anodized aluminum Anodized aluminum Anodized aluminum

Body Material - IRW-xS Type AISI-grade 316 stainless steel AISI-grade 316 stainless steel AISI-grade 316 stainless steel

Gasket Material Silicone Silicone Silicone

Hardware Material Steel Steel Steel

Size Specifications
Overall Height 85.5 mm (3.36 in) 107.4 mm (4.22 in) 136.5 mm (5.37 in)

Overall Width 73 mm (2.87 in) 99 mm (3.89 in) 127.44 mm (5.01 in)

Overall Thickness 25.5 mm (1.00 in) 26.86 mm (1.05 in) 29.25 mm (1.15 in)

Required Hole Diameter (Nominal) 60.3 mm (2 3/8 in) 88.9 mm (3 1/2 in) 114.3 mm (4 1/2 in)

Greenlee Punch 76BB 739BB 742BB

Recommended Max. Panel Thickness 3.2 mm (1/8 in) 3.2 mm (1/8 in) 3.2 mm (1/8 in)

Optic Specifications
Optic Diameter 50 mm (1.97 in) 75 mm (2.95 in) 95 mm (3.74 in)

Viewing Aperture Diameter 45 mm (1.77 in) 69 mm (2.71 in) 89 mm (3.50 in)

Viewing Aperture Area 1590 mm² (2.46 in²) 3739 mm² (5.79 in²) 6221 mm² (9.64 in²)

Optic Maximum Temperature 1355.6°C (2474°F) 1355.6°C (2474°F) 1355.6°C (2474°F)

Ratings & Testing

UL Component Recognition (UL 50V) Yes Yes Yes

UL 50 / NEMA Environment Rating Type 4/12 Type 4/12 Type 4/12

Arc Flash Testing, IEC 62271-200 5 kV, 63 kA for 30 cycles at 60 Hz 5 kV, 63 kA for 30 cycles at 60 Hz 5 kV, 63 kA for 30 cycles at 60 Hz
(KEMA)*

IP Rating, IEC 60529 (TUV)* IP67 IP67 IP67

Vibration Testing, IEC 60068-2-6 (TUV)* 100 m/s² vibration withstand 100 m/s² vibration withstand 100 m/s² vibration withstand

Humidity Testing, IEC 60068-2-3 (TUV)* Extreme humidity withstand Extreme humidity withstand Extreme humidity withstand

Mechanical Testing, ANSI/IEEE C37.20.2 Impact and load resistant cover Impact and load resistant cover Impact and load resistant cover
Section A3.6 (TUV)*

Maximum Pullout Strength 657 kg (1450 lbs) 1655 kg (3650 lbs) 1678 kg (3700 lbs)

CSA Certification, C22.2 No. 14 or 508 Yes Yes Yes

*Test results valid for IRW-2C, IRW-3C, and IRW-4C only.

CORPORATE CHINA
HEADQUARTERS RM 1613-16, Tower II
27700 SW Parkway Ave. Grand Central Plaza
Wilsonville, OR 97070 138 Shatin Rural Committee Rd.
PH: +1 877.773.3547 Shatin, New Territories www.flir.com
Hong Kong NASDAQ: FLIR
NASHUA PH: +852 2792 8955
Equipment described herein is subject to US export
9 Townsend West regulations and may require a license prior to export.
Nashua, NH 06063 EUROPE Diversion contrary to US law is prohibited. Imagery for
USA Luxemburgstraat 2 illustration purposes only. Specifications are subject to
PH: +1 603.324.7611 2321 Meer change without notice. ©2017 FLIR Systems, Inc. All
Belgium rights reserved. 11/09/17
PH: +32 (0) 3665 5100 17-3170-INS