DESCRIPTION:

The FLIR IRW-4C Infrared Window is a permanently installed inspection window designed to provide safe access for thermal imaging inspections of energised electrical equipment without removing panel covers or opening enclosures. The window creates a protective barrier between personnel and live electrical systems while allowing thermal cameras to capture thermal images and temperature data safely.

Featuring a broadband calcium fluoride crystal optic, the IRW-4C transmits shortwave, midwave, and longwave infrared energy while also allowing visible light transmission. This enables compatibility with FLIR thermal cameras and supports both visual and thermal inspections through a single inspection point.

The window incorporates FLIR's PIRma-Lock™ mounting technology, allowing secure installation without additional mounting screws. The anodised aluminium frame provides excellent corrosion resistance and durability for long-term use in industrial, utility, and commercial environments.

The IRW-4C is commonly installed on switchgear, motor control centres, transformers, distribution panels, substations, and electrical cabinets to support predictive maintenance programmes, improve inspection efficiency, and reduce arc flash risks during routine thermographic surveys.

Technical Specifications

• SKU: 19252-100
• Model: IRW-4C
• Window size: 4 inch
• Overall diameter: 127 mm (5.01 inch)
• Required panel cut-out: 114.3 mm (4.5 inch)
• Inspection aperture diameter: approximately 89–95 mm
• Optic material: Calcium fluoride crystal
• Frame material: Anodised aluminium
• Maximum operating temperature: 260°C
• NEMA Type 4/12 rated
• IP67 rated
• Broadband IR transmission
• Indoor and outdoor installation
• PIRma-Lock™ mounting system
• Compatible with all FLIR thermal cameras
• Supports visual and thermal inspections through a single window

Key Features

• 4-inch infrared inspection window
• Broadband infrared transmission
• Arc flash risk reduction
• PIRma-Lock™ installation system
• Anodised aluminium construction
• Compatible with FLIR thermal cameras
• Suitable for switchgear inspections
• Suitable for motor control centres
• Suitable for transformers and substations
• Indoor and outdoor use
• Supports predictive maintenance programmes
• Maintains enclosure integrity
• Enables inspections without opening panels
• Utility and industrial grade construction