Thomas Betts NS864 Polycarbonate Enclosure Nema 4X

Product Description

The THOMAS BETTS NS864 is a standard polycarbonate electrical enclosure designed to house and protect electrical components in commercial and industrial installations. Measuring 6 inches wide, 8 inches high, and 4 inches deep, this enclosure carries NEMA ratings covering Types 1, 2, 3, 3S, 3SX, 3X, 4, and 4X, making it suitable for both indoor and outdoor applications where moisture, dust, and corrosion resistance are required. The flat screw-on cover design provides secure access and a low-profile fit. Licensed electricians and control panel builders typically specify this enclosure for junction boxes, control panels, and instrumentation housings.

This enclosure is well-suited for light commercial and industrial environments where a corrosion-resistant, non-metallic housing is preferred over steel. The polycarbonate construction offers impact resistance and eliminates rust concerns in wet or chemically aggressive locations. Typical applications include outdoor disconnect panels, irrigation controls, pool and spa control equipment, and marine or coastal electrical installations where NEMA 4X protection is a code or design requirement.

Key Features

• Polycarbonate construction provides impact resistance and corrosion immunity
• NEMA ratings 1, 2, 3, 3S, 3SX, 3X, 4, and 4X in a single enclosure
• Flat screw cover with captive cover screws for tool-accessible closure
• Includes captive cover screws, hinges, and swing panels
• cULus Listed E88685 and UL Listed 50 certified
• Lightweight at 2 pounds, simplifying wall or panel mounting

Compatibility

Designed as an OEM-style standard enclosure for residential, commercial, and light industrial electrical installations requiring NEMA 1 through 4X rated protection in a polycarbonate housing.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC requirements for enclosure selection, conductor fill, and mounting. De-energize all circuits before opening or wiring the enclosure. Ensure all conduit knockouts and fittings are properly sealed to maintain the rated NEMA protection level. Do not overtighten cover screws, as polycarbonate is subject to cracking under excessive fastener torque.