Thomas Betts E989UUN Junction Box Nema 4 4X 12x12x4

Product Description

The THOMAS BETTS E989UUN is a thermoplastic junction box electrical enclosure rated NEMA 4 and NEMA 4X, designed for housing and protecting electrical connections in environments where moisture, dust, and corrosion are concerns. The enclosure measures 12 inches wide, 12 inches high, and 4 inches deep, providing a practical interior volume for wiring terminations, small controls, or terminal blocks. It ships at 11.7 pounds. The flat screw cover includes a foam-in-place gasket for a reliable environmental seal, and stainless steel screws are included. Licensed electricians and industrial maintenance technicians are the typical installers for this type of enclosure.

This enclosure is suited for both indoor and outdoor applications where a watertight and corrosion-resistant housing is required. Common installation scenarios include control panels, pump stations, irrigation systems, light industrial equipment, and outdoor electrical distribution points. The thermoplastic construction resists corrosion without the need for surface coatings, making it a practical choice in wet, coastal, or chemically active environments. It is appropriate for residential, commercial, and light industrial use where NEMA 4 or NEMA 4X protection is specified.

Key Features

• NEMA 4 and NEMA 4X rated for watertight and corrosion-resistant protection
• Thermoplastic construction provides inherent corrosion resistance without coatings
• Foam-in-place gasket on the flat screw cover ensures a consistent environmental seal
• Stainless steel screws included for corrosion-resistant fastening
• CSA Certified and UL Listed under File E11461
• 12 inches wide by 12 inches high by 4 inches deep interior footprint suitable for terminal blocks and small controls

Compatibility

Designed as an OEM-style NEMA 4 and 4X junction box enclosure for general electrical installations requiring watertight and corrosion-resistant protection in indoor or outdoor service conditions.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and any applicable local codes. De-energize all circuits before opening or wiring the enclosure. Verify that conduit entry fittings used to penetrate the enclosure walls are rated to maintain the NEMA 4 or 4X seal integrity. Do not modify the enclosure walls in ways that compromise the gasket seal or the structural rating of the box.