Keep energized electrical equipment closed during inspection, and easily comply with OSHA, NFPA 70E, CSA Z462 and similar electrical safety mandates.
Closed-panel inspections eliminate inherently high-risk tasks, such as removing panels or opening hinged doors, making your work processes safer for personnel, plant assets and processes.
The more efficient work process can reduce inspection costs by 75% to 95%, while improving worker safety.
Download Product SheetOVERVIEW
IR windows provide safe access to “inaccessible” energized equipment.
Because using inspection windows does not increase risk of electrical hazards, inspections can be performed during peak load, when data collection is ideal, without worry of accidental process interruption.
Turtle Tough IR windows are extraordinarily robust, with the body and cover machined from bar stock aluminium and an impact resistant optic that easily meets international standards. The Turtle Tough delivers extreme strength and superior usability.
TECHNICAL FEATURES
– Impact resistant optic per UL and ANSI standards.
– Body & cover machined from bar stock aluminum (stainless steel available).
– 4” x 4” aperture is 66% larger than similar sized round windows.
– Square aperture does not “clip” camera’s squared display.
– Camera lens can be placed on window optic (as opposed to 2” back) for fuller field of view.
– Higher “flatter” LWIR Transmission curves for temperature accuracy.
– Polymer optic remains stable over life of product without delicate sealants required.
– Contact your local Distributor for a demonstration, and see why Turtle Tough is the best value on the market today.
| TT-IR4-AHS | TT-IR3-AHS | TT-IR4-SHS | |
|---|---|---|---|
| Dimension Specifications (nom.) | |||
| Body and Cover (L x H) | 6.0 in x 6.0 in (152 mm) x (152 mm) | 5.0 in x 5.0 in (127 mm) x (127 mm) | 6.0 in x 6.0 in (152 mm) x (152 mm) |
| Total Width (Body + Cover) | 0.9 in (23 mm) | 0.9 in (23 mm) | 0.9 in (23 mm) |
| Cover Thickness | 0.4 in (10 mm) | 0.4 in (10 mm) | 0.4 in (10 mm) |
| Aperture Dimension | 4.0 in x 4.0 in (102 mm) x (102 mm) | 3.0 in x 3.0 in (76 mm) x (76 mm) | 4.0 in x 4.0 in (102 mm) x (102 mm) |
| Aperture Area | 16 sq in (406 sq mm) | 9 sq in (229 sq mm) | 16 sq in (406 sq mm) |
| Tested / Certified | |||
| UL 50V (IR Window Standard) | Yes | Yes | Yes |
| UL Type Rating / NEMA | Type 4 | Type 4 | Type 4X |
| Ingress Protection (IP) | IP65 | IP65 | IP65 |
| UL 746C (Impact & Flame Resistance) | Yes | Yes | Yes |
| ANSI/IEEE C37.20.2 Sec A.3.6(Switchgear Window Impact Resistance) | Yes | Yes | Yes |
| ANSI/IEEE C37.20.7 Arc Resistance | Yes | Yes | Yes |
| CSA Compliant (cUL) | Yes | Yes | Yes |
| Material Specifications | |||
| Body & Cover Material | Aluminum: Anodized & Powder Coated | Aluminum: Anodized & Powder Coated | Stainless Steel |
| Backer Plate & Finger Guard | Stainless Steel | Stainless Steel | Stainless Steel |
| Hardware & Fasteners | Stainless Steel | Stainless Steel | Stainless Steel |
| Optic | Transmissive Polymer | Transmissive Polymer | Transmissive Polymer |
| Gaskets | Silicone & Neoprene | Silicone & Neoprene | Silicone & Neoprene |
| Cover Screws* | ¼-20 Captive | ¼-20 Captive | ¼-20 Captive |
| Transmission Compatibility | |||
| Mid Wave & Long Wave Imagers | All Brands | ||
| Vibration | Unaffected | ||
| Broad Spectrum Acids / Alkalis | Unaffected | ||
| Humidity & Moisture | Unaffected | ||
| General | |||
| Voltage Range | Low, Medium & High | ||
| Grounding | Automatically grounds when mounted to grounded panel/door | ||
| Operating Temperature | -40ºC (-40ºF) to 150ºC (300ºF) | ||
| Installation | Saw-Cut or Punch | ||
| Lifetime Warranty | Unconditional for Materials & Workmanship | ||
| Patent | Patent Pending: USA and International | ||
| Country of Origin | Proudly Made in the USA | ||
*Standard Cover Screw Type: Allen Head (Hex Socket). Other options available.
© 2026 IR Windows - Turtle Tough Australia.
